Itinerant ferromagnetism in the As 4p conduction band of Ba0.6K0.4Mn2As2 identified by x-ray magnetic circular dichroism

Ueland, B. G.; Pandey, Abhishek; Lee, Y.; Sapkota, A.; Choi, Y.; Haskel, D.; Rosenberg, R. A.; Lang, J. C.; Harmon, B. N.; Johnston, D. C.; Kreyssig, A.; Goldman, A. I.

doi:10.1103/PhysRevLett.114.217001

Title: Itinerant ferromagnetism in the As 4p conduction band of Ba_0.6K_0.4Mn₂As₂ identified by x-ray magnetic circular dichroism

Abstract

In this study, x-ray magnetic circular dichroism (XMCD) measurements on single-crystal and powder samples of Ba_0.6K_0.4Mn₂As₂ show that the ferromagnetism below T_C ≈ 100 K arises in the As 4p conduction band. No XMCD signal is observed at the Mn x-ray absorption edges. Below T_C, however, a clear XMCD signal is found at the As K edge which increases with decreasing temperature. The XMCD signal is absent in data taken with the beam directed parallel to the crystallographic c axis indicating that the orbital magnetic moment lies in the basal plane of the tetragonal lattice. These results show that the previously reported itinerant ferromagnetism is associated with the As 4p conduction band and that distinct local-moment antiferromagnetism and itinerant ferromagnetism with perpendicular easy axes coexist in this compound at low temperature.

Authors:

Ueland, B. G. ^[1]; Pandey, Abhishek ^[1]; Lee, Y. ^[1]; Sapkota, A. ^[1]; Choi, Y. ^[2]; Haskel, D. ^[2]; Rosenberg, R. A. ^[2]; Lang, J. C. ^[2]; Harmon, B. N. ^[1]; Johnston, D. C. ^[1]; Kreyssig, A. ^[1]; Goldman, A. I. ^[1]

Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)

Publication Date:: Wed May 27 00:00:00 EDT 2015

Research Org.:: Ames Lab., Ames, IA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1227312

Alternate Identifier(s):: OSTI ID: 1183229

Report Number(s):: IS-J-8698
Journal ID: ISSN 0031-9007; PRLTAO

Grant/Contract Number:: AC02-07CH11358; AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 114; Journal Issue: 21; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Ueland, B. G., Pandey, Abhishek, Lee, Y., Sapkota, A., Choi, Y., Haskel, D., Rosenberg, R. A., Lang, J. C., Harmon, B. N., Johnston, D. C., Kreyssig, A., and Goldman, A. I. Itinerant ferromagnetism in the As 4p conduction band of Ba0.6K0.4Mn2As2 identified by x-ray magnetic circular dichroism.  United States: N. p., 2015. 
Web.  doi:10.1103/PhysRevLett.114.217001.

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                    Ueland, B. G., Pandey, Abhishek, Lee, Y., Sapkota, A., Choi, Y., Haskel, D., Rosenberg, R. A., Lang, J. C., Harmon, B. N., Johnston, D. C., Kreyssig, A., & Goldman, A. I. Itinerant ferromagnetism in the As 4p conduction band of Ba0.6K0.4Mn2As2 identified by x-ray magnetic circular dichroism.  United States.  https://doi.org/10.1103/PhysRevLett.114.217001

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                    Ueland, B. G., Pandey, Abhishek, Lee, Y., Sapkota, A., Choi, Y., Haskel, D., Rosenberg, R. A., Lang, J. C., Harmon, B. N., Johnston, D. C., Kreyssig, A., and Goldman, A. I. Wed .  
"Itinerant ferromagnetism in the As 4p conduction band of Ba0.6K0.4Mn2As2 identified by x-ray magnetic circular dichroism".  United States.  https://doi.org/10.1103/PhysRevLett.114.217001.  https://www.osti.gov/servlets/purl/1227312.

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@article{osti_1227312,

  title        = {Itinerant ferromagnetism in the As 4p conduction band of Ba0.6K0.4Mn2As2 identified by x-ray magnetic circular dichroism},

  author       = {Ueland, B. G. and Pandey, Abhishek and Lee, Y. and Sapkota, A. and Choi, Y. and Haskel, D. and Rosenberg, R. A. and Lang, J. C. and Harmon, B. N. and Johnston, D. C. and Kreyssig, A. and Goldman, A. I.},

  abstractNote = {In this study, x-ray magnetic circular dichroism (XMCD) measurements on single-crystal and powder samples of Ba0.6K0.4Mn2As2 show that the ferromagnetism below TC ≈ 100 K arises in the As 4p conduction band. No XMCD signal is observed at the Mn x-ray absorption edges. Below TC, however, a clear XMCD signal is found at the As K edge which increases with decreasing temperature. The XMCD signal is absent in data taken with the beam directed parallel to the crystallographic c axis indicating that the orbital magnetic moment lies in the basal plane of the tetragonal lattice. These results show that the previously reported itinerant ferromagnetism is associated with the As 4p conduction band and that distinct local-moment antiferromagnetism and itinerant ferromagnetism with perpendicular easy axes coexist in this compound at low temperature.},

  doi          = {10.1103/PhysRevLett.114.217001},

  journal      = {Physical Review Letters},

  number       = 21,

  volume       = 114,

  place        = {United States},

  year         = {Wed May 27 00:00:00 EDT 2015},

  month        = {Wed May 27 00:00:00 EDT 2015}

}

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Works referencing / citing this record:

Magnetic hexadecapole order and magnetopiezoelectric metal state in ${Ba}_{1 - x} K_{x} {Mn}_{2} {As}_{2}$
journal, August 2017

Watanabe, Hikaru; Yanase, Youichi
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Magnetic Circular Dichroism in X-Ray Emission from Ferromagnets
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Orbital loop currents in iron-based superconductors
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Title: Itinerant ferromagnetism in the As 4p conduction band of Ba0.6K0.4Mn2As2 identified by x-ray magnetic circular dichroism

Abstract

Citation Formats

The Resonating Valence Bond State in La2CuO4 and Superconductivity journal, March 1987

Superconductivity in iron compounds journal, December 2011

Neutron studies of the iron-based family of high TC magnetic superconductors journal, May 2009

High-temperature superconductivity in iron-based materials journal, August 2010

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

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New diluted ferromagnetic semiconductor with Curie temperature up to 180 K and isostructural to the ‘122’ iron-based superconductors journal, February 2013

Coexistence of Half-Metallic Itinerant Ferromagnetism with Local-Moment Antiferromagnetism in Ba 0.60 K 0.40 Mn 2 As 2 journal, July 2013

Neue ternäre Erdalkaliverbindungen des Arsens mit Mangan / New Ternary Alkaline Earth Compounds of Arsenic with Manganese journal, July 1978

Magnetic, transport, and thermal properties of single crystals of the layered arsenide BaMn 2 As 2 journal, March 2009

Magnetic order in BaMn 2 As 2 from neutron diffraction measurements journal, September 2009

Magnetic exchange interactions in BaMn 2 As 2 : A case study of the J 1 - J 2 - J c Heisenberg model journal, September 2011

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Title: Itinerant ferromagnetism in the As 4p conduction band of Ba_0.6K_0.4Mn₂As₂ identified by x-ray magnetic circular dichroism

The Resonating Valence Bond State in La2CuO4 and Superconductivity
journal, March 1987

Superconductivity in iron compounds
journal, December 2011

Neutron studies of the iron-based family of high TC magnetic superconductors
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journal, August 2010

FeAs-Based Superconductivity: A Case Study of the Effects of Transition Metal Doping on BaFe ₂ As ₂
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Doping a Mott insulator: Physics of high-temperature superconductivity
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Magnetic, transport, and thermal properties of single crystals of the layered arsenide ${BaMn}_{2} {As}_{2}$
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journal, January 2012

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X-ray circular dichroism as a probe of orbital magnetization
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