Spectroscopic Evidence for Strong Quantum Spin Fluctuations with Itinerant Character in YFe2Ge2

Sirica, N.; Bondino, F.; Nappini, S.; Piz, I.; Poudel, L.; Christianson, Andrew D.; Mandrus, D.; Singh, David J; Mannella, Norman

doi:10.1103/PhysRevB.91.121102

Title: Spectroscopic Evidence for Strong Quantum Spin Fluctuations with Itinerant Character in YFe₂Ge₂

Abstract

We report x-ray absorption and photoemission spectroscopy of the electronic structure in the normal state of metallic YFe₂Ge₂. The data reveal evidence for large fluctuating spin moments on the Fe sites, as indicated by exchange multiplets appearing in the Fe 3s core-level photoemission spectra, even though the compound does not show magnetic order. The magnitude of the multiplet splitting is comparable to that observed in the normal state of the Fe-pnictide superconductors. This shows a connection between YFe₂Ge₂ and the Fe-based superconductors even though it contains neither pnictogens nor chalcogens. Finally, the implication is that the chemical range of compounds showing at least one of the characteristic magnetic signatures of the Fe-based superconductors is broader than previously thought.

Authors:

Sirica, N. ^[1]; Bondino, F. ^[2]; Nappini, S. ^[2]; Piz, I. ^[3]; Poudel, L. ^[4]; Christianson, Andrew D. ^[4]; Mandrus, D. ^[5]; Singh, David J ^[6]; Mannella, Norman ^[1]

Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
Italian National Research Council (CNR), Basovizza (Italy). Istit. Officina dei Materiali
Italian National Research Council (CNR), Basovizza (Italy). Istit. Officina dei Materiali; Elettra Sincrotrone Trieste, Basovizza (Italy)
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division

Publication Date:: Wed Mar 04 00:00:00 EST 2015

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1295093

Alternate Identifier(s):: OSTI ID: 1179902

Grant/Contract Number:: AC05-00OR22725; DMR-1151687

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review. B, Condensed Matter and Materials Physics

Additional Journal Information:: Journal Volume: 91; Journal Issue: 12; Journal ID: ISSN 1098-0121

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Sirica, N., Bondino, F., Nappini, S., Piz, I., Poudel, L., Christianson, Andrew D., Mandrus, D., Singh, David J, and Mannella, Norman. Spectroscopic Evidence for Strong Quantum Spin Fluctuations with Itinerant Character in YFe2Ge2.  United States: N. p., 2015. 
Web.  doi:10.1103/PhysRevB.91.121102.

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                    Sirica, N., Bondino, F., Nappini, S., Piz, I., Poudel, L., Christianson, Andrew D., Mandrus, D., Singh, David J, & Mannella, Norman. Spectroscopic Evidence for Strong Quantum Spin Fluctuations with Itinerant Character in YFe2Ge2.  United States.  https://doi.org/10.1103/PhysRevB.91.121102

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                    Sirica, N., Bondino, F., Nappini, S., Piz, I., Poudel, L., Christianson, Andrew D., Mandrus, D., Singh, David J, and Mannella, Norman. Wed .  
"Spectroscopic Evidence for Strong Quantum Spin Fluctuations with Itinerant Character in YFe2Ge2".  United States.  https://doi.org/10.1103/PhysRevB.91.121102.  https://www.osti.gov/servlets/purl/1295093.

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@article{osti_1295093,

  title        = {Spectroscopic Evidence for Strong Quantum Spin Fluctuations with Itinerant Character in YFe2Ge2},

  author       = {Sirica, N. and Bondino, F. and Nappini, S. and Piz, I. and Poudel, L. and Christianson, Andrew D. and Mandrus, D. and Singh, David J and Mannella, Norman},

  abstractNote = {We report x-ray absorption and photoemission spectroscopy of the electronic structure in the normal state of metallic YFe2Ge2. The data reveal evidence for large fluctuating spin moments on the Fe sites, as indicated by exchange multiplets appearing in the Fe 3s core-level photoemission spectra, even though the compound does not show magnetic order. The magnitude of the multiplet splitting is comparable to that observed in the normal state of the Fe-pnictide superconductors. This shows a connection between YFe2Ge2 and the Fe-based superconductors even though it contains neither pnictogens nor chalcogens. Finally, the implication is that the chemical range of compounds showing at least one of the characteristic magnetic signatures of the Fe-based superconductors is broader than previously thought.},

  doi          = {10.1103/PhysRevB.91.121102},

  journal      = {Physical Review. B, Condensed Matter and Materials Physics},

  number       = 12,

  volume       = 91,

  place        = {United States},

  year         = {Wed Mar 04 00:00:00 EST 2015},

  month        = {Wed Mar 04 00:00:00 EST 2015}

}

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Title: Spectroscopic Evidence for Strong Quantum Spin Fluctuations with Itinerant Character in YFe2Ge2

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Divergent Nematic Susceptibility in an Iron Arsenide Superconductor journal, August 2012

Competitions in Layered Ruthenates: Ferromagnetism versus Antiferromagnetism and Triplet versus Singlet Pairing journal, May 1999

Density Functional Study of LaFeAsO 1 − x F x : A Low Carrier Density Superconductor Near Itinerant Magnetism journal, June 2008

Accounting for spin fluctuations beyond local spin density approximation in the density functional theory journal, August 2012

Evidence for a localized magnetic moment in paramagnetic α-Mn from multiplet splitting journal, September 1974

Orbital symmetry of Ba ( Fe 1 − x Co x ) 2 As 2 superconductors probed with x-ray absorption spectroscopy journal, March 2010

Magnetically mediated superconductivity in heavy fermion compounds journal, July 1998

Magnetic moments and x-ray photoelectron spectroscopy splittings in Fe 3s core levels of materials containing Fe journal, April 1988

Electronic nematicity above the structural and superconducting transition in BaFe2(As1−xP x )2 journal, June 2012

Evidence for weak electronic correlations in iron pnictides journal, July 2009

Antiferromagnetic spin fluctuations and proximity to a quantum critical point in Sr 2 Ru O 4 journal, March 2005

Synchrotron-radiation photoemission and x-ray absorption of Fe silicides journal, September 1993

Iron pnictides as a new setting for quantum criticality journal, March 2009

Theory of electron nematic order in LaFeAsO journal, June 2008

Itinerant electrons, local moments, and magnetic correlations in the pnictide superconductors CeFeAsO 1 − x F x and Sr(Fe 1 − x Co x ) 2 As 2 journal, June 2012

Effect of a nonzero temperature on quantum critical points in itinerant fermion systems journal, September 1993

X-ray photoelectron spectroscopic study of ordered stoichiometric FeAl fractured in situ journal, March 2006

Coexistence of the spin-density wave and superconductivity in Ba 1−x K x Fe 2 As 2 journal, January 2009

Effects of substitution on low-temperature physical properties of LuFe 2 Ge 2 journal, December 2011

Competition Between Antiferromagnetism and Ferromagnetism in Sr2RuO4 Probed by Mn and Co Doping journal, October 2013

Reconstruction of Band Structure Induced by Electronic Nematicity in an FeSe Superconductor journal, December 2014

Fermi liquid breakdown and evidence for superconductivity in YFe 2 Ge 2 : Fermi liquid breakdown and evidence for superconductivity in YFe journal, September 2014

A key role for unusual spin dynamics in ferropnictides journal, December 2008

The puzzle of high temperature superconductivity in layered iron pnictides and chalcogenides journal, October 2010

Itinerant Electron Magnetism journal, August 1984

Itinerant electron magnetism journal, February 1983

Evidence for weak electronic correlations in Fe-pnictides text, January 2009

Orbital Symmetry of Ba(Fe1-xCox)2As2 Superconductors Probed with X-ray Absorption Spectroscopy text, January 2010

Nature of magnetic excitations in superconducting BaFe$_{1.9}$Ni$_{0.1}$As$_{2}$ text, January 2012

Reconstruction of Band Structure Induced by Electronic Nematicity in an FeSe Superconductor text, January 2014

Search for unconventional superconductors among the Y TE 2 Si 2 compounds ( TE = Cr, Co, Ni, Rh, Pd, Pt) journal, April 2017

Composition dependence of bulk superconductivity in YFe 2 Ge 2 journal, January 2019

Coexistence of Ferromagnetic and Stripe-Type Antiferromagnetic Spin Fluctuations in YFe 2 Ge 2 journal, May 2019

Composition dependence of bulk superconductivity in YFe2Ge2 text, January 2019

Non-trivial role of interlayer cation states in iron-based superconductors text, January 2016

Title: Spectroscopic Evidence for Strong Quantum Spin Fluctuations with Itinerant Character in YFe₂Ge₂

Unconventional superconductivity in Ba0.6K0.4Fe2As2 from inelastic neutron scattering
journal, December 2008

The magnetic moment enigma in Fe-based high temperature superconductors
journal, October 2014

Band structure and itinerant magnetism in quantum critical ${NbFe}_{2}$
journal, January 2010

Magnetic structure of the Laves phase compound TiFe ₂
journal, December 1992

Pressure Effect on Magnetic Short Range Ordering of LuFe ₂ Ge ₂
journal, January 2007

Weak Antiferromagnetism in NbFe ₂
journal, January 1988

Problems with reconciling density functional theory calculations with experiment in ferropnictides
journal, August 2008

Spin fluctuations and the magnetic phase diagram of ${ZrZn}_{2}$
journal, January 2004

Unconventional Superconductivity with a Sign Reversal in the Order Parameter of ${LaFeAsO}_{1 - x} F_{x}$
journal, July 2008

Spin-resolved and high-energy-resolution XPS studies of the 3 s and 2 s levels of metallic cobalt
journal, January 1994

Unconventional sign-changing superconductivity near quantum criticality in YFe $_{2}$ Ge $_{2}$
journal, January 2014

Effect of Ferromagnetic Spin Correlations on Superconductivity
journal, August 1966

Nature of magnetic excitations in superconducting BaFe1.9Ni0.1As2
journal, March 2012

Revealing the dual nature of magnetism in iron pnictides and iron chalcogenides using x-ray emission spectroscopy
journal, September 2011

Inelastic neutron scattering study of the magnetic fluctuations in Sr $_{2}$ RuO $_{4}$
journal, August 2011

Magnetic order close to superconductivity in the iron-based layered LaO1-xF x FeAs systems
journal, May 2008

Evidence for Strong Itinerant Spin Fluctuations in the Normal State of ${CeFeAsO}_{0.89} F_{0.11}$ Iron-Oxypnictide Superconductors
journal, December 2008

Anisotropic magnetization, specific heat and resistivity of RFe2Ge2 single crystals
journal, March 2004

Itinerant electron magnetism
journal, April 1981

Superconductivity and magnetism in YFe $_{2}$ Ge $_{2}$
journal, January 2014

Comparison of the background corrected valence band XPS spectra of Fe and Co aluminides and silicides with their electronic structures
journal, October 2006

Correlated metals and the $LDA + U$ method
journal, April 2003

Dichotomy between Large Local and Small Ordered Magnetic Moments in Iron-Based Superconductors
journal, May 2010

Contribution of $Fe 3 d$ states to the Fermi level of ${CaFe}_{2} {As}_{2}$
journal, August 2009

Divergent Nematic Susceptibility in an Iron Arsenide Superconductor
journal, August 2012

Competitions in Layered Ruthenates: Ferromagnetism versus Antiferromagnetism and Triplet versus Singlet Pairing
journal, May 1999

Density Functional Study of ${LaFeAsO}_{1 - x} F_{x}$ : A Low Carrier Density Superconductor Near Itinerant Magnetism
journal, June 2008

Accounting for spin fluctuations beyond local spin density approximation in the density functional theory
journal, August 2012

Evidence for a localized magnetic moment in paramagnetic α-Mn from multiplet splitting
journal, September 1974

Orbital symmetry of $Ba {({Fe}_{1 - x} {Co}_{x})}_{2} {As}_{2}$ superconductors probed with x-ray absorption spectroscopy
journal, March 2010

Magnetically mediated superconductivity in heavy fermion compounds
journal, July 1998

Magnetic moments and x-ray photoelectron spectroscopy splittings in Fe 3s core levels of materials containing Fe
journal, April 1988

Electronic nematicity above the structural and superconducting transition in BaFe2(As1−xP x )2
journal, June 2012

Evidence for weak electronic correlations in iron pnictides
journal, July 2009

Antiferromagnetic spin fluctuations and proximity to a quantum critical point in ${Sr}_{2} Ru O_{4}$
journal, March 2005

Synchrotron-radiation photoemission and x-ray absorption of Fe silicides
journal, September 1993

Iron pnictides as a new setting for quantum criticality
journal, March 2009

Theory of electron nematic order in LaFeAsO
journal, June 2008

Itinerant electrons, local moments, and magnetic correlations in the pnictide superconductors CeFeAsO $_{1 - x}$ F $_{x}$ and Sr(Fe $_{1 - x}$ Co $_{x}$ ) $_{2}$ As $_{2}$
journal, June 2012

Effect of a nonzero temperature on quantum critical points in itinerant fermion systems
journal, September 1993

X-ray photoelectron spectroscopic study of ordered stoichiometric FeAl fractured in situ
journal, March 2006

Coexistence of the spin-density wave and superconductivity in Ba _1−x K _x Fe ₂ As ₂
journal, January 2009

Effects of substitution on low-temperature physical properties of LuFe ₂ Ge ₂
journal, December 2011

Competition Between Antiferromagnetism and Ferromagnetism in Sr2RuO4 Probed by Mn and Co Doping
journal, October 2013

Reconstruction of Band Structure Induced by Electronic Nematicity in an FeSe Superconductor
journal, December 2014

Fermi liquid breakdown and evidence for superconductivity in YFe ₂ Ge ₂ : Fermi liquid breakdown and evidence for superconductivity in YFe
journal, September 2014

A key role for unusual spin dynamics in ferropnictides
journal, December 2008

The puzzle of high temperature superconductivity in layered iron pnictides and chalcogenides
journal, October 2010

Itinerant Electron Magnetism
journal, August 1984

Itinerant electron magnetism
journal, February 1983

Evidence for weak electronic correlations in Fe-pnictides
text, January 2009

Orbital Symmetry of Ba(Fe1-xCox)2As2 Superconductors Probed with X-ray Absorption Spectroscopy
text, January 2010

Nature of magnetic excitations in superconducting BaFe$_{1.9}$Ni$_{0.1}$As$_{2}$
text, January 2012

Reconstruction of Band Structure Induced by Electronic Nematicity in an FeSe Superconductor
text, January 2014

Search for unconventional superconductors among the Y TE ₂ Si ₂ compounds ( TE = Cr, Co, Ni, Rh, Pd, Pt)
journal, April 2017

Composition dependence of bulk superconductivity in ${YFe}_{2} {Ge}_{2}$
journal, January 2019

Coexistence of Ferromagnetic and Stripe-Type Antiferromagnetic Spin Fluctuations in ${YFe}_{2} {Ge}_{2}$
journal, May 2019

Composition dependence of bulk superconductivity in YFe2Ge2
text, January 2019

Non-trivial role of interlayer cation states in iron-based superconductors
text, January 2016