Interplay of local moment and itinerant magnetism in cobalt-based Heusler ferromagnets: Co2TiSi, Co2MnSi and Co2FeSi

doi:10.1103/PhysRevB.101.014427

Title: Interplay of local moment and itinerant magnetism in cobalt-based Heusler ferromagnets: ${Co}_{2} TiSi, {Co}_{2} MnSi$ and ${Co}_{2} FeSi$

Abstract

Heusler ferromagnets based on Co are important materials for spintronics. This is due to the exceptional combinations of high Curie temperature and strong spin polarization, including half-metallicity, found in some of these. In this study, we investigate the full Heusler compounds, ${Co}_{2} TiSi$ , ${Co}_{2} MnSi$ , and ${Co}_{2} FeSi$ using first principles calculations. ${Co}_{2} TiSi$ and ${Co}_{2} MnSi$ are half metals, while ${Co}_{2} FeSi$ is not. The trends in the Curie temperatures are reproduced by the calculated spin wave dispersions. Remarkably, ${Co}_{2} TiSi$ is a very itinerant magnet but ${Co}_{2} FeSi$ and ${Co}_{2} MnSi$ show local moment behavior regarding the Fe and Mn, while retaining the itinerancy of the Co magnetism. These materials can therefore be described as itinerant systems with embedded local moment atoms. This provides an explanation for their exceptional behavior. We show that our results do not support the half-metallic character proposed for ${Co}_{2} FeSi$ , but they are consistent with a higher Curie temperature relative to the Mn compound. The density of states and transport spin polarizations ${Co}_{2} FeSi$ have opposite signs. Importantly, although there is a large minority spin density of states at the Fermi level, leading to a low density of states spin polarization, we find a very strong transport spin polarization in ${Co}_{2} FeSi$ . This, combined with the large moment, cubic structure, and high Curie temperature supports the further investigation of ${Co}_{2} FeSi$ for spintronic applications that make use of the transport spin polarization.

Authors:

Qin, Guanhua ^[1];

^[2];

^[3]

Shanghai Univ. (China); Univ. of Missouri, Columbia, MO (United States)
Shanghai Univ. (China)
Univ. of Missouri, Columbia, MO (United States)

Publication Date:: 2020-01-21

Research Org.:: Univ. of Missouri, Columbia, MO (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division

OSTI Identifier:: 1592687

Grant/Contract Number:: SC0019114

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 101; Journal Issue: 1; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Heusler compounds; transport; spin polarization

Citation Formats


                    Qin, Guanhua, Ren, Wei, and Singh, David J. Interplay of local moment and itinerant magnetism in cobalt-based Heusler ferromagnets: Co2TiSi, Co2MnSi and Co2FeSi.  United States: N. p., 2020. 
        Web.  doi:10.1103/PhysRevB.101.014427.

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                    Qin, Guanhua, Ren, Wei, & Singh, David J. Interplay of local moment and itinerant magnetism in cobalt-based Heusler ferromagnets: Co2TiSi, Co2MnSi and Co2FeSi.  United States.  doi:10.1103/PhysRevB.101.014427.

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                    Qin, Guanhua, Ren, Wei, and Singh, David J. Tue .  
        "Interplay of local moment and itinerant magnetism in cobalt-based Heusler ferromagnets: Co2TiSi, Co2MnSi and Co2FeSi".  United States.  doi:10.1103/PhysRevB.101.014427.  https://www.osti.gov/servlets/purl/1592687.

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@article{osti_1592687,

  title        = {Interplay of local moment and itinerant magnetism in cobalt-based Heusler ferromagnets: Co2TiSi, Co2MnSi and Co2FeSi},

  author       = {Qin, Guanhua and Ren, Wei and Singh, David J.},

  abstractNote = {Heusler ferromagnets based on Co are important materials for spintronics. This is due to the exceptional combinations of high Curie temperature and strong spin polarization, including half-metallicity, found in some of these. In this study, we investigate the full Heusler compounds, Co2TiSi, Co2MnSi, and Co2FeSi using first principles calculations. Co2TiSi and Co2MnSi are half metals, while Co2FeSi is not. The trends in the Curie temperatures are reproduced by the calculated spin wave dispersions. Remarkably, Co2TiSi is a very itinerant magnet but Co2FeSi and Co2MnSi show local moment behavior regarding the Fe and Mn, while retaining the itinerancy of the Co magnetism. These materials can therefore be described as itinerant systems with embedded local moment atoms. This provides an explanation for their exceptional behavior. We show that our results do not support the half-metallic character proposed for Co2FeSi, but they are consistent with a higher Curie temperature relative to the Mn compound. The density of states and transport spin polarizations Co2FeSi have opposite signs. Importantly, although there is a large minority spin density of states at the Fermi level, leading to a low density of states spin polarization, we find a very strong transport spin polarization in Co2FeSi. This, combined with the large moment, cubic structure, and high Curie temperature supports the further investigation of Co2FeSi for spintronic applications that make use of the transport spin polarization.},

  doi          = {10.1103/PhysRevB.101.014427},

  journal      = {Physical Review B},

  number       = 1,

  volume       = 101,

  place        = {United States},

  year         = {2020},

  month        = {1}

}

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DOI: 10.1103/PhysRevB.101.014427

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Works referenced in this record:

Controlling the properties of high energy density permanent magnetic materials by different processing routes
journal, August 2000

Gutfleisch, O.
Journal of Physics D: Applied Physics, Vol. 33, Issue 17
DOI: 10.1088/0022-3727/33/17/201

Superconductivity at 22 K in Co-Doped ${BaFe}_{2} {As}_{2}$ Crystals
journal, September 2008

Sefat, Athena S.; Jin, Rongying; McGuire, Michael A.
Physical Review Letters, Vol. 101, Issue 11
DOI: 10.1103/PhysRevLett.101.117004

Geometric, electronic, and magnetic structure of ${Co}_{2} FeSi$ : Curie temperature and magnetic moment measurements and calculations
journal, November 2005

Wurmehl, Sabine; Fecher, Gerhard H.; Kandpal, Hem C.
Physical Review B, Vol. 72, Issue 18
DOI: 10.1103/PhysRevB.72.184434

Investigation of Co2FeSi: The Heusler compound with highest Curie temperature and magnetic moment
journal, January 2006

Wurmehl, Sabine; Fecher, Gerhard H.; Kandpal, Hem Chandra
Applied Physics Letters, Vol. 88, Issue 3
DOI: 10.1063/1.2166205

First-principles study of spin-dependent thermoelectric properties of half-metallic Heusler thin films between platinum leads
journal, March 2014

Comtesse, Denis; Geisler, Benjamin; Entel, Peter
Physical Review B, Vol. 89, Issue 9
DOI: 10.1103/PhysRevB.89.094410

Direct observation of half-metallicity in the Heusler compound Co2MnSi
journal, May 2014

Jourdan, M.; Minár, J.; Braun, J.
Nature Communications, Vol. 5, Issue 1
DOI: 10.1038/ncomms4974

Exchange interactions and temperature dependence of magnetization in half-metallic Heusler alloys
journal, November 2005

Şaşıoğlu, E.; Sandratskii, L. M.; Bruno, P.
Physical Review B, Vol. 72, Issue 18
DOI: 10.1103/PhysRevB.72.184415

G W study of the half-metallic Heusler compounds Co 2 MnSi and Co 2 FeSi
journal, December 2012

Meinert, Markus; Friedrich, Christoph; Reiss, Günter
Physical Review B, Vol. 86, Issue 24
DOI: 10.1103/PhysRevB.86.245115

Spin polarization of Co2FeSi full-Heusler alloy and tunneling magnetoresistance of its magnetic tunneling junctions
journal, August 2006

Gercsi, Z.; Rajanikanth, A.; Takahashi, Y. K.
Applied Physics Letters, Vol. 89, Issue 8
DOI: 10.1063/1.2338025

Structural and magnetic properties and tunnel magnetoresistance for Co ₂ (Cr,Fe)Al and Co ₂ FeSi full-Heusler alloys
journal, February 2006

Inomata, K.; Okamura, S.; Miyazaki, A.
Journal of Physics D: Applied Physics, Vol. 39, Issue 5
DOI: 10.1088/0022-3727/39/5/S07

Highly ordered, half-metallic Co2FeSi single crystals
journal, October 2009

Blum, C. G. F.; Jenkins, C. A.; Barth, J.
Applied Physics Letters, Vol. 95, Issue 16
DOI: 10.1063/1.3242370

On the half-metallicity of Co 2 FeSi Heusler alloy: Point-contact Andreev reflection spectroscopy and ab initio study
journal, June 2013

Makinistian, L.; Faiz, Muhammad M.; Panguluri, Raghava P.
Physical Review B, Vol. 87, Issue 22
DOI: 10.1103/PhysRevB.87.220402

Full-Heusler Co 2 FeSi alloy thin films with perpendicular magnetic anisotropy induced by MgO-interfaces
journal, May 2014

Takamura, Yota; Suzuki, Takahiro; Fujino, Yorinobu
Journal of Applied Physics, Vol. 115, Issue 17
DOI: 10.1063/1.4865971

Electronic properties of Co2FeSi investigated by X-ray magnetic linear dichroism
journal, November 2014

Emmel, M.; Alfonsov, A.; Legut, D.
Journal of Magnetism and Magnetic Materials, Vol. 368
DOI: 10.1016/j.jmmm.2014.06.001

Correlations Between Structural and Magnetic Properties of Co 2 FeSi Heusler-Alloy Thin Films
journal, September 2017

Zhu, Weihua; Wu, Di; Zhao, Bingcheng
Physical Review Applied, Vol. 8, Issue 3
DOI: 10.1103/PhysRevApplied.8.034012

Magnetization precession and damping in Co2FeSi Heusler alloy thin films
journal, June 2019

Zhu, Weihua; Zhu, Zhendong; Li, Dong
Journal of Magnetism and Magnetic Materials, Vol. 479
DOI: 10.1016/j.jmmm.2019.01.087

Simple rules for the understanding of Heusler compounds
journal, May 2011

Graf, Tanja; Felser, Claudia; Parkin, Stuart S. P.
Progress in Solid State Chemistry, Vol. 39, Issue 1
DOI: 10.1016/j.progsolidstchem.2011.02.001

Slater-Pauling rule and Curie temperature of Co2-based Heusler compounds
journal, April 2006

Fecher, Gerhard H.; Kandpal, Hem C.; Wurmehl, Sabine
Journal of Applied Physics, Vol. 99, Issue 8
DOI: 10.1063/1.2167629

Understanding the trend in the Curie temperatures of ${Co}_{2}$ -based Heusler compounds: Ab initio calculations
journal, July 2007

Kübler, J.; Fecher, G. H.; Felser, C.
Physical Review B, Vol. 76, Issue 2
DOI: 10.1103/PhysRevB.76.024414

Magneto-optical properties of metallic ferromagnetic materials
journal, August 1983

Buschow, K. H. J.; van Engen, P. G.; Jongebreur, R.
Journal of Magnetism and Magnetic Materials, Vol. 38, Issue 1, p. 1-22
DOI: 10.1016/0304-8853(83)90097-5

Properties of Heusler-type materials Fe2TSi and FeCo2Si
journal, March 1977

Niculescu, V.; Burch, T. J.; Raj, K.
Journal of Magnetism and Magnetic Materials, Vol. 5, Issue 1
DOI: 10.1016/0304-8853(77)90197-4

Anomalous transport properties of the half-metallic ferromagnets Co ₂ TiSi, Co ₂ TiGe and Co ₂ TiSn
journal, September 2011

Barth, Joachim; Fecher, Gerhard H.; Balke, Benjamin
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 369, Issue 1951
DOI: 10.1098/rsta.2011.0183

Itinerant half-metallic ferromagnets ${Co}_{2} Ti Z$ $(Z = Si, Ge, Sn)$ : Ab initio calculations and measurement of the electronic structure and transport properties
journal, February 2010

Barth, Joachim; Fecher, Gerhard H.; Balke, Benjamin
Physical Review B, Vol. 81, Issue 6
DOI: 10.1103/PhysRevB.81.064404

Magnetic and chemical order in Heusler alloys containing cobalt and manganese
journal, January 1971

Webster, P. J.
Journal of Physics and Chemistry of Solids, Vol. 32, Issue 6
DOI: 10.1016/S0022-3697(71)80180-4

Generalized Gradient Approximation Made Simple
journal, October 1996

Perdew, John P.; Burke, Kieron; Ernzerhof, Matthias
Physical Review Letters, Vol. 77, Issue 18, p. 3865-3868
DOI: 10.1103/PhysRevLett.77.3865

Correlation in the transition-metal-based Heusler compounds ${Co}_{2} MnSi$ and ${Co}_{2} FeSi$
journal, March 2006

Kandpal, Hem Chandra; Fecher, Gerhard H.; Felser, Claudia
Physical Review B, Vol. 73, Issue 9
DOI: 10.1103/PhysRevB.73.094422

Linear response approach to the calculation of the effective interaction parameters in the $LDA + U$ method
journal, January 2005

Cococcioni, Matteo; de Gironcoli, Stefano
Physical Review B, Vol. 71, Issue 3
DOI: 10.1103/PhysRevB.71.035105

Density functional methods for the magnetism of transition metals: SCAN in relation to other functionals
journal, July 2019

Fu, Yuhao; Singh, David J.
Physical Review B, Vol. 100, Issue 4
DOI: 10.1103/PhysRevB.100.045126

Exploring half-metallic Co-based full Heusler alloys using a DFT+ U method combined with linear response approach
journal, January 2019

Nawa, Kenji; Miura, Yoshio
RSC Advances, Vol. 9, Issue 52
DOI: 10.1039/C9RA05212G

Magnetic correlation in itinerant magnetic materials above T C (invited)
journal, March 1984

Brown, P. J.; Ziebeck, K. R. A.; Déportes, J.
Journal of Applied Physics, Vol. 55, Issue 6
DOI: 10.1063/1.333508

Measurements of the magnetic excitations above T _c in iron and nickel (invited)
journal, April 1985

Mook, H. A.; Lynn, J. W.
Journal of Applied Physics, Vol. 57, Issue 8
DOI: 10.1063/1.335196

Ab initio calculation of the effective on-site Coulomb interaction parameters for half-metallic magnets
journal, October 2013

Şaşıoğlu, Ersoy; Galanakis, Iosif; Friedrich, Christoph
Physical Review B, Vol. 88, Issue 13
DOI: 10.1103/PhysRevB.88.134402

The $S$ Matrix in Quantum Electrodynamics
journal, June 1949

Dyson, F. J.
Physical Review, Vol. 75, Issue 11
DOI: 10.1103/PhysRev.75.1736

Local density-functional theory of frequency-dependent linear response
journal, December 1985

Gross, E. K. U.; Kohn, Walter
Physical Review Letters, Vol. 55, Issue 26
DOI: 10.1103/PhysRevLett.55.2850

Energies and Lifetimes of Magnons in Complex Ferromagnets: A First-Principle Study of Heusler Alloys
journal, June 2009

Buczek, Paweł; Ernst, Arthur; Bruno, Patrick
Physical Review Letters, Vol. 102, Issue 24
DOI: 10.1103/PhysRevLett.102.247206

Adiabatic generalized gradient approximation kernel in time-dependent density functional theory
journal, January 2019

Singh, N.; Elliott, P.; Nautiyal, T.
Physical Review B, Vol. 99, Issue 3
DOI: 10.1103/PhysRevB.99.035151

Electronic, magnetic and transport properties of Co2TiZ (Z=Si, Ge and Sn): A first-principle study
journal, October 2010

Sharma, Vinit; Solanki, A. K.; Kashyap, Arti
Journal of Magnetism and Magnetic Materials, Vol. 322, Issue 19
DOI: 10.1016/j.jmmm.2010.05.006

BoltzTraP. A code for calculating band-structure dependent quantities
journal, July 2006

Madsen, Georg K. H.; Singh, David J.
Computer Physics Communications, Vol. 175, Issue 1
DOI: 10.1016/j.cpc.2006.03.007

Electronic and magnetic properties of the 4d itinerant ferromagnet SrRuO3
journal, January 1996

Singh, David J.
Journal of Applied Physics, Vol. 79, Issue 8
DOI: 10.1063/1.361618

Measurements of spin polarization of epitaxial SrRuO3 thin films
journal, January 2003

Nadgorny, B.; Osofsky, M. S.; Singh, D. J.
Applied Physics Letters, Vol. 82, Issue 3
DOI: 10.1063/1.1539551

Negative Spin-Polarization of ${SrRuO}_{3}$
journal, December 2000

Worledge, D. C.; Geballe, T. H.
Physical Review Letters, Vol. 85, Issue 24
DOI: 10.1103/PhysRevLett.85.5182

Silicides and ohmic contacts
journal, February 1998

Gambino, J. P.; Colgan, E. G.
Materials Chemistry and Physics, Vol. 52, Issue 2
DOI: 10.1016/S0254-0584(98)80014-X

Metallic nickel silicides: Experiments and theory for NiSi and first principles calculations for other phases
journal, July 2016

Dahal, Ashutosh; Gunasekera, Jagath; Harringer, Leland
Journal of Alloys and Compounds, Vol. 672
DOI: 10.1016/j.jallcom.2016.02.133

Single-crystal metallic nanowires and metal/semiconductor nanowire heterostructures
journal, July 2004

Wu, Yue; Xiang, Jie; Yang, Chen
Nature, Vol. 430, Issue 6995, p. 61-65
DOI: 10.1038/nature02674

Tunneling between ferromagnetic films
journal, September 1975

Julliere, M.
Physics Letters A, Vol. 54, Issue 3
DOI: 10.1016/0375-9601(75)90174-7

Large Magnetoresistance at Room Temperature in Ferromagnetic Thin Film Tunnel Junctions
journal, April 1995

Moodera, J. S.; Kinder, Lisa R.; Wong, Terrilyn M.
Physical Review Letters, Vol. 74, Issue 16
DOI: 10.1103/PhysRevLett.74.3273

Spin-dependent tunnelling in magnetic tunnel junctions
journal, January 2003

Tsymbal, Evgeny Y.; Mryasov, Oleg N.; LeClair, Patrick R.
Journal of Physics: Condensed Matter, Vol. 15, Issue 4
DOI: 10.1088/0953-8984/15/4/201

Andreev Reflection in Ferromagnet-Superconductor Junctions
journal, February 1995

de Jong, M. J. M.; Beenakker, C. W. J.
Physical Review Letters, Vol. 74, Issue 9
DOI: 10.1103/PhysRevLett.74.1657

Measuring the Spin Polarization of a Metal with a Superconducting Point Contact
journal, October 1998

Soulen Jr., R. J.
Science, Vol. 282, Issue 5386
DOI: 10.1126/science.282.5386.85

Determination of the Spin Polarization of Half-Metallic ${CrO}_{2}$ by Point Contact Andreev Reflection
journal, June 2001

Ji, Y.; Strijkers, G. J.; Yang, F. Y.
Physical Review Letters, Vol. 86, Issue 24
DOI: 10.1103/PhysRevLett.86.5585

Transition from metallic to tunneling regimes in superconducting microconstrictions: Excess current, charge imbalance, and supercurrent conversion
journal, April 1982

Blonder, G. E.; Tinkham, M.; Klapwijk, T. M.
Physical Review B, Vol. 25, Issue 7
DOI: 10.1103/PhysRevB.25.4515

Probing spin polarization with Andreev reflection: A theoretical basis
journal, June 2001

Mazin, I. I.; Golubov, A. A.; Nadgorny, B.
Journal of Applied Physics, Vol. 89, Issue 11
DOI: 10.1063/1.1357127

Itinerant Electron Magnetism
journal, August 1984

Moriya, T.; Takahashi, Y.
Annual Review of Materials Science, Vol. 14, Issue 1
DOI: 10.1146/annurev.ms.14.080184.000245

An itinerant antiferromagnetic metal without magnetic constituents
journal, July 2015

Svanidze, E.; Wang, Jiakui K.; Besara, T.
Nature Communications, Vol. 6, Issue 1
DOI: 10.1038/ncomms8701

Neutron-Scattering Measurement of the Spin-Wave Spectra for Nickel
journal, January 1985

Mook, H. A.; Paul, D. McK.
Physical Review Letters, Vol. 54, Issue 3
DOI: 10.1103/PhysRevLett.54.227

High Temperature Magnetic Ordering in the $4 d$ Perovskite ${SrTcO}_{3}$
journal, February 2011

Rodriguez, Efrain E.; Poineau, Frédéric; Llobet, Anna
Physical Review Letters, Vol. 106, Issue 6
DOI: 10.1103/PhysRevLett.106.067201

Electronic structure and magnetism in ${BaMn}_{2} {As}_{2}$ and ${BaMn}_{2} {Sb}_{2}$
journal, February 2009

An, Jiming; Sefat, A. S.; Singh, D. J.
Physical Review B, Vol. 79, Issue 7
DOI: 10.1103/PhysRevB.79.075120

Properties of the antiferromagnetic selenite MnSeO ₃ and its non-magnetic analogue ZnSnO ₃ from first principles calculations
journal, August 2017

Honer, C. J.; Prosniewski, M. J.; Putatunda, A.
Journal of Physics: Condensed Matter, Vol. 29, Issue 40
DOI: 10.1088/1361-648X/aa7f89

Electronic structure and weak itinerant magnetism in metallic $Y_{2} {Ni}_{7}$
journal, November 2015

Singh, David J.
Physical Review B, Vol. 92, Issue 17
DOI: 10.1103/PhysRevB.92.174403

Electronic and magnetic properties of perovskite selenite and tellurite compounds: CoSeO 3 , NiSeO 3 , CoTeO 3 , and NiTeO 3
journal, January 2020

Iasir, A. Rafi M.; Lombardi, Todd; Lu, Qiangsheng
Physical Review B, Vol. 101, Issue 4
DOI: 10.1103/PhysRevB.101.045107

Itinerant metamagnetism in YCO ₂
journal, July 1984

Schwarz, K.; Mohn, P.
Journal of Physics F: Metal Physics, Vol. 14, Issue 7
DOI: 10.1088/0305-4608/14/7/008

Ferromagnetic phases of bcc and fcc Fe, Co, and Ni
journal, August 1986

Moruzzi, V. L.; Marcus, P. M.; Schwarz, K.
Physical Review B, Vol. 34, Issue 3
DOI: 10.1103/PhysRevB.34.1784

Transport properties and origin of ferromagnetism in (Ga,Mn)As
journal, January 1998

Matsukura, F.; Ohno, H.; Shen, A.
Physical Review B, Vol. 57, Issue 4
DOI: 10.1103/PhysRevB.57.R2037

Characterization of half-metallic L21-phase Co2FeSi full-Heusler alloy thin films formed by rapid thermal annealing
journal, April 2008

Takamura, Yota; Nakane, Ryosho; Munekata, Hiro
Journal of Applied Physics, Vol. 103, Issue 7
DOI: 10.1063/1.2838648

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Title: Interplay of local moment and itinerant magnetism in cobalt-based Heusler ferromagnets: Co 2 TiSi , Co 2 MnSi and Co 2 FeSi

Abstract

Citation Formats

Controlling the properties of high energy density permanent magnetic materials by different processing routes journal, August 2000

Superconductivity at 22 K in Co-Doped BaFe 2 As 2 Crystals journal, September 2008

Geometric, electronic, and magnetic structure of Co 2 FeSi : Curie temperature and magnetic moment measurements and calculations journal, November 2005

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First-principles study of spin-dependent thermoelectric properties of half-metallic Heusler thin films between platinum leads journal, March 2014

Direct observation of half-metallicity in the Heusler compound Co2MnSi journal, May 2014

Exchange interactions and temperature dependence of magnetization in half-metallic Heusler alloys journal, November 2005

G W study of the half-metallic Heusler compounds Co 2 MnSi and Co 2 FeSi journal, December 2012

Spin polarization of Co2FeSi full-Heusler alloy and tunneling magnetoresistance of its magnetic tunneling junctions journal, August 2006

Structural and magnetic properties and tunnel magnetoresistance for Co 2 (Cr,Fe)Al and Co 2 FeSi full-Heusler alloys journal, February 2006

Highly ordered, half-metallic Co2FeSi single crystals journal, October 2009

On the half-metallicity of Co 2 FeSi Heusler alloy: Point-contact Andreev reflection spectroscopy and ab initio study journal, June 2013

Full-Heusler Co 2 FeSi alloy thin films with perpendicular magnetic anisotropy induced by MgO-interfaces journal, May 2014

Electronic properties of Co2FeSi investigated by X-ray magnetic linear dichroism journal, November 2014

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Simple rules for the understanding of Heusler compounds journal, May 2011

Slater-Pauling rule and Curie temperature of Co2-based Heusler compounds journal, April 2006

Understanding the trend in the Curie temperatures of Co 2 -based Heusler compounds: Ab initio calculations journal, July 2007

Magneto-optical properties of metallic ferromagnetic materials journal, August 1983

Properties of Heusler-type materials Fe2TSi and FeCo2Si journal, March 1977

Anomalous transport properties of the half-metallic ferromagnets Co 2 TiSi, Co 2 TiGe and Co 2 TiSn journal, September 2011

Itinerant half-metallic ferromagnets Co 2 Ti Z ( Z = Si , Ge , Sn ) : Ab initio calculations and measurement of the electronic structure and transport properties journal, February 2010

Magnetic and chemical order in Heusler alloys containing cobalt and manganese journal, January 1971

Generalized Gradient Approximation Made Simple journal, October 1996

Correlation in the transition-metal-based Heusler compounds Co 2 MnSi and Co 2 FeSi journal, March 2006

Linear response approach to the calculation of the effective interaction parameters in the LDA + U method journal, January 2005

Density functional methods for the magnetism of transition metals: SCAN in relation to other functionals journal, July 2019

Exploring half-metallic Co-based full Heusler alloys using a DFT+ U method combined with linear response approach journal, January 2019

Magnetic correlation in itinerant magnetic materials above T C (invited) journal, March 1984

Measurements of the magnetic excitations above T c in iron and nickel (invited) journal, April 1985

Ab initio calculation of the effective on-site Coulomb interaction parameters for half-metallic magnets journal, October 2013

The S Matrix in Quantum Electrodynamics journal, June 1949

Local density-functional theory of frequency-dependent linear response journal, December 1985

Energies and Lifetimes of Magnons in Complex Ferromagnets: A First-Principle Study of Heusler Alloys journal, June 2009

Adiabatic generalized gradient approximation kernel in time-dependent density functional theory journal, January 2019

Electronic, magnetic and transport properties of Co2TiZ (Z=Si, Ge and Sn): A first-principle study journal, October 2010

BoltzTraP. A code for calculating band-structure dependent quantities journal, July 2006

Electronic and magnetic properties of the 4d itinerant ferromagnet SrRuO3 journal, January 1996

Measurements of spin polarization of epitaxial SrRuO3 thin films journal, January 2003

Negative Spin-Polarization of SrRuO 3 journal, December 2000

Silicides and ohmic contacts journal, February 1998

Metallic nickel silicides: Experiments and theory for NiSi and first principles calculations for other phases journal, July 2016

Single-crystal metallic nanowires and metal/semiconductor nanowire heterostructures journal, July 2004

Tunneling between ferromagnetic films journal, September 1975

Large Magnetoresistance at Room Temperature in Ferromagnetic Thin Film Tunnel Junctions journal, April 1995

Spin-dependent tunnelling in magnetic tunnel junctions journal, January 2003

Andreev Reflection in Ferromagnet-Superconductor Junctions journal, February 1995

Measuring the Spin Polarization of a Metal with a Superconducting Point Contact journal, October 1998

Determination of the Spin Polarization of Half-Metallic CrO 2 by Point Contact Andreev Reflection journal, June 2001

Transition from metallic to tunneling regimes in superconducting microconstrictions: Excess current, charge imbalance, and supercurrent conversion journal, April 1982

Probing spin polarization with Andreev reflection: A theoretical basis journal, June 2001

Itinerant Electron Magnetism journal, August 1984

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Neutron-Scattering Measurement of the Spin-Wave Spectra for Nickel journal, January 1985

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Ferromagnetic phases of bcc and fcc Fe, Co, and Ni journal, August 1986

Transport properties and origin of ferromagnetism in (Ga,Mn)As journal, January 1998

Characterization of half-metallic L21-phase Co2FeSi full-Heusler alloy thin films formed by rapid thermal annealing journal, April 2008

Title: Interplay of local moment and itinerant magnetism in cobalt-based Heusler ferromagnets: ${Co}_{2} TiSi, {Co}_{2} MnSi$ and ${Co}_{2} FeSi$

Controlling the properties of high energy density permanent magnetic materials by different processing routes
journal, August 2000

Superconductivity at 22 K in Co-Doped ${BaFe}_{2} {As}_{2}$ Crystals
journal, September 2008

Geometric, electronic, and magnetic structure of ${Co}_{2} FeSi$ : Curie temperature and magnetic moment measurements and calculations
journal, November 2005

Investigation of Co2FeSi: The Heusler compound with highest Curie temperature and magnetic moment
journal, January 2006

First-principles study of spin-dependent thermoelectric properties of half-metallic Heusler thin films between platinum leads
journal, March 2014

Direct observation of half-metallicity in the Heusler compound Co2MnSi
journal, May 2014

Exchange interactions and temperature dependence of magnetization in half-metallic Heusler alloys
journal, November 2005

G W study of the half-metallic Heusler compounds Co 2 MnSi and Co 2 FeSi
journal, December 2012

Spin polarization of Co2FeSi full-Heusler alloy and tunneling magnetoresistance of its magnetic tunneling junctions
journal, August 2006

Structural and magnetic properties and tunnel magnetoresistance for Co ₂ (Cr,Fe)Al and Co ₂ FeSi full-Heusler alloys
journal, February 2006

Highly ordered, half-metallic Co2FeSi single crystals
journal, October 2009

On the half-metallicity of Co 2 FeSi Heusler alloy: Point-contact Andreev reflection spectroscopy and ab initio study
journal, June 2013

Full-Heusler Co 2 FeSi alloy thin films with perpendicular magnetic anisotropy induced by MgO-interfaces
journal, May 2014

Electronic properties of Co2FeSi investigated by X-ray magnetic linear dichroism
journal, November 2014

Correlations Between Structural and Magnetic Properties of Co 2 FeSi Heusler-Alloy Thin Films
journal, September 2017

Magnetization precession and damping in Co2FeSi Heusler alloy thin films
journal, June 2019

Simple rules for the understanding of Heusler compounds
journal, May 2011

Slater-Pauling rule and Curie temperature of Co2-based Heusler compounds
journal, April 2006

Understanding the trend in the Curie temperatures of ${Co}_{2}$ -based Heusler compounds: Ab initio calculations
journal, July 2007

Magneto-optical properties of metallic ferromagnetic materials
journal, August 1983

Properties of Heusler-type materials Fe2TSi and FeCo2Si
journal, March 1977

Anomalous transport properties of the half-metallic ferromagnets Co ₂ TiSi, Co ₂ TiGe and Co ₂ TiSn
journal, September 2011

Itinerant half-metallic ferromagnets ${Co}_{2} Ti Z$ $(Z = Si, Ge, Sn)$ : Ab initio calculations and measurement of the electronic structure and transport properties
journal, February 2010

Magnetic and chemical order in Heusler alloys containing cobalt and manganese
journal, January 1971

Generalized Gradient Approximation Made Simple
journal, October 1996

Correlation in the transition-metal-based Heusler compounds ${Co}_{2} MnSi$ and ${Co}_{2} FeSi$
journal, March 2006

Linear response approach to the calculation of the effective interaction parameters in the $LDA + U$ method
journal, January 2005

Density functional methods for the magnetism of transition metals: SCAN in relation to other functionals
journal, July 2019

Exploring half-metallic Co-based full Heusler alloys using a DFT+ U method combined with linear response approach
journal, January 2019

Magnetic correlation in itinerant magnetic materials above T C (invited)
journal, March 1984

Measurements of the magnetic excitations above T _c in iron and nickel (invited)
journal, April 1985

Ab initio calculation of the effective on-site Coulomb interaction parameters for half-metallic magnets
journal, October 2013

The $S$ Matrix in Quantum Electrodynamics
journal, June 1949

Local density-functional theory of frequency-dependent linear response
journal, December 1985

Energies and Lifetimes of Magnons in Complex Ferromagnets: A First-Principle Study of Heusler Alloys
journal, June 2009

Adiabatic generalized gradient approximation kernel in time-dependent density functional theory
journal, January 2019

Electronic, magnetic and transport properties of Co2TiZ (Z=Si, Ge and Sn): A first-principle study
journal, October 2010

BoltzTraP. A code for calculating band-structure dependent quantities
journal, July 2006

Electronic and magnetic properties of the 4d itinerant ferromagnet SrRuO3
journal, January 1996

Measurements of spin polarization of epitaxial SrRuO3 thin films
journal, January 2003

Negative Spin-Polarization of ${SrRuO}_{3}$
journal, December 2000

Silicides and ohmic contacts
journal, February 1998

Metallic nickel silicides: Experiments and theory for NiSi and first principles calculations for other phases
journal, July 2016

Single-crystal metallic nanowires and metal/semiconductor nanowire heterostructures
journal, July 2004

Tunneling between ferromagnetic films
journal, September 1975

Large Magnetoresistance at Room Temperature in Ferromagnetic Thin Film Tunnel Junctions
journal, April 1995

Spin-dependent tunnelling in magnetic tunnel junctions
journal, January 2003

Andreev Reflection in Ferromagnet-Superconductor Junctions
journal, February 1995

Measuring the Spin Polarization of a Metal with a Superconducting Point Contact
journal, October 1998

Determination of the Spin Polarization of Half-Metallic ${CrO}_{2}$ by Point Contact Andreev Reflection
journal, June 2001

Transition from metallic to tunneling regimes in superconducting microconstrictions: Excess current, charge imbalance, and supercurrent conversion
journal, April 1982

Probing spin polarization with Andreev reflection: A theoretical basis
journal, June 2001

Itinerant Electron Magnetism
journal, August 1984

An itinerant antiferromagnetic metal without magnetic constituents
journal, July 2015

Neutron-Scattering Measurement of the Spin-Wave Spectra for Nickel
journal, January 1985

High Temperature Magnetic Ordering in the $4 d$ Perovskite ${SrTcO}_{3}$
journal, February 2011

Electronic structure and magnetism in ${BaMn}_{2} {As}_{2}$ and ${BaMn}_{2} {Sb}_{2}$
journal, February 2009

Properties of the antiferromagnetic selenite MnSeO ₃ and its non-magnetic analogue ZnSnO ₃ from first principles calculations
journal, August 2017

Electronic structure and weak itinerant magnetism in metallic $Y_{2} {Ni}_{7}$
journal, November 2015

Electronic and magnetic properties of perovskite selenite and tellurite compounds: CoSeO 3 , NiSeO 3 , CoTeO 3 , and NiTeO 3
journal, January 2020

Itinerant metamagnetism in YCO ₂
journal, July 1984

Ferromagnetic phases of bcc and fcc Fe, Co, and Ni
journal, August 1986

Transport properties and origin of ferromagnetism in (Ga,Mn)As
journal, January 1998

Characterization of half-metallic L21-phase Co2FeSi full-Heusler alloy thin films formed by rapid thermal annealing
journal, April 2008