Origin of magnetic excitation gap in double perovskite Sr2FeOsO6

Taylor, Alice E.; Morrow, Ryan; Lumsden, Mark D.; Calder, Stuart A.; Upton, M. H.; Kolesnikov, Alexander I.; Stone, Matthew B.; Fishman, Randy Scott; Paramekanti, A.; Woodward, Patrick M.; Christianson, Andrew D.

doi:10.1103/PhysRevB.98.214422

Title: Origin of magnetic excitation gap in double perovskite ${Sr}_{2} {FeOsO}_{6}$

Abstract

Sr₂FeOsO₆ is an insulating double perovskite compound which undergoes antiferromagnetic transitions at 140 (T_N1) and 67 K (T_N2). To study the underlying electronic and magnetic interactions giving rise to this behavior we have performed inelastic neutron scattering (INS) and resonant inelastic x-ray scattering (RIXS) experiments on polycrystalline samples of Sr₂FeOsO₆. The INS data reveal that the spectrum of spin excitations remains ungapped below T_N1, however below T_N2 a gap of 6.8 meV develops. The RIXS data reveals splitting of the T_2g multiplet consistent with that seen in other 5d³ osmium based double perovskites. Altogether these results suggest that spin-orbit coupling is important for ground state selection in 3d–5d³ double perovskite materials.

Authors:

^[1]; Morrow, Ryan ^[2];

^[1];

^[1]; Upton, M. H. ^[3];

^[1];

^[1]; Paramekanti, A. ^[4]; Woodward, Patrick M. ^[5];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
The Ohio State Univ., Columbus, OH (United States); Leibniz Institute for Solid State and Materials Research Dresden IFW, Dresden (Germany)
Argonne National Lab. (ANL), Argonne, IL (United States)
Univ. of Toronto, Toronto, ON (Canada); Canadian Institute for Advanced Research, Toronto, ON (Canada)
The Ohio State Univ., Columbus, OH (United States)

Publication Date:: Wed Dec 12 00:00:00 EST 2018

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Alexander von Humboldt Foundation; National Science Foundation (NSF)

OSTI Identifier:: 1489595

Alternate Identifier(s):: OSTI ID: 1485528; OSTI ID: 1488380

Grant/Contract Number:: AC05-00OR22725; AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 98; Journal Issue: 21; 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; 36 MATERIALS SCIENCE

Citation Formats


                    Taylor, Alice E., Morrow, Ryan, Lumsden, Mark D., Calder, Stuart A., Upton, M. H., Kolesnikov, Alexander I., Stone, Matthew B., Fishman, Randy Scott, Paramekanti, A., Woodward, Patrick M., and Christianson, Andrew D. Origin of magnetic excitation gap in double perovskite Sr2FeOsO6.  United States: N. p., 2018. 
Web.  doi:10.1103/PhysRevB.98.214422.

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                    Taylor, Alice E., Morrow, Ryan, Lumsden, Mark D., Calder, Stuart A., Upton, M. H., Kolesnikov, Alexander I., Stone, Matthew B., Fishman, Randy Scott, Paramekanti, A., Woodward, Patrick M., & Christianson, Andrew D. Origin of magnetic excitation gap in double perovskite Sr2FeOsO6.  United States.  https://doi.org/10.1103/PhysRevB.98.214422

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                    Taylor, Alice E., Morrow, Ryan, Lumsden, Mark D., Calder, Stuart A., Upton, M. H., Kolesnikov, Alexander I., Stone, Matthew B., Fishman, Randy Scott, Paramekanti, A., Woodward, Patrick M., and Christianson, Andrew D. Wed .  
"Origin of magnetic excitation gap in double perovskite Sr2FeOsO6".  United States.  https://doi.org/10.1103/PhysRevB.98.214422.  https://www.osti.gov/servlets/purl/1489595.

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@article{osti_1489595,

  title        = {Origin of magnetic excitation gap in double perovskite Sr2FeOsO6},

  author       = {Taylor, Alice E. and Morrow, Ryan and Lumsden, Mark D. and Calder, Stuart A. and Upton, M. H. and Kolesnikov, Alexander I. and Stone, Matthew B. and Fishman, Randy Scott and Paramekanti, A. and Woodward, Patrick M. and Christianson, Andrew D.},

  abstractNote = {Sr2FeOsO6 is an insulating double perovskite compound which undergoes antiferromagnetic transitions at 140 (TN1) and 67 K (TN2). To study the underlying electronic and magnetic interactions giving rise to this behavior we have performed inelastic neutron scattering (INS) and resonant inelastic x-ray scattering (RIXS) experiments on polycrystalline samples of Sr2FeOsO6. The INS data reveal that the spectrum of spin excitations remains ungapped below TN1, however below TN2 a gap of 6.8 meV develops. The RIXS data reveals splitting of the T2g multiplet consistent with that seen in other 5d3 osmium based double perovskites. Altogether these results suggest that spin-orbit coupling is important for ground state selection in 3d–5d3 double perovskite materials.},

  doi          = {10.1103/PhysRevB.98.214422},

  journal      = {Physical Review B},

  number       = 21,

  volume       = 98,

  place        = {United States},

  year         = {Wed Dec 12 00:00:00 EST 2018},

  month        = {Wed Dec 12 00:00:00 EST 2018}

}

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Works referencing / citing this record:

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Paramekanti, Arun; Maharaj, Dalini D.; Gaulin, Bruce D.
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Title: Origin of magnetic excitation gap in double perovskite Sr 2 FeOsO 6

Abstract

Citation Formats

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Title: Origin of magnetic excitation gap in double perovskite ${Sr}_{2} {FeOsO}_{6}$

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Magnetic phase transitions and iron valence in the double perovskite Sr 2 FeOsO 6
journal, October 2013

High-Temperature Ferrimagnetism Driven by Lattice Distortion in Double Perovskite Ca ₂ FeOsO ₆
journal, February 2014

Lattice-distortion Induced Magnetic Transition from Low-temperature Antiferromagnetism to High-temperature Ferrimagnetism in Double Perovskites A2FeOsO6 (A = Ca, Sr)
journal, August 2015

Spin-orbit-driven magnetic structure and excitation in the 5d pyrochlore Cd2Os2O7
journal, June 2016

Evolution of the Magnetic Excitations in ${NaOsO}_{3}$ through its Metal-Insulator Transition
journal, May 2018

Momentum-resolved Resonant and Nonresonant Inelastic X-ray Scattering at the Advanced Photon Source
journal, November 2009

A2B′B″O6 perovskites: A review
journal, May 2015

Spin gap and the nature of the 4 $d^{3}$ magnetic ground state in the frustrated fcc antiferromagnet Ba $_{2}$ YRuO $_{6}$
journal, July 2013

Strongly gapped spin-wave excitation in the insulating phase of ${NaOsO}_{3}$
journal, January 2017

Strongly Gapped Spin-Wave Excitation in the Insulating Phase of NaOsO3
text, January 2016

Crossover from itinerant to localized magnetic excitations through the metal-insulator transition in NaOsO$_{\text{3}}$
text, January 2017

Interplay of spin-orbit coupling and hybridization in Ca3LiOsO6 and Ca3LiRuO6
text, January 2017

Spin-orbit coupled systems in the "atomic" limit: rhenates, osmates, iridates
text, January 2018

Octupolar order in d-orbital Mott insulators
text, January 2019