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Title: Strongly gapped spin-wave excitation in the insulating phase of NaOsO 3

NaOsO 3 hosts a rare manifestation of a metal-insulator transition driven by magnetic correlations, placing the magnetic exchange interactions in a central role. We use resonant inelastic x-ray scattering to directly probe these magnetic exchange interactions. A dispersive and strongly gapped (58 meV) excitation is observed indicating appreciable spin-orbit coupling in this 5d 3 system. The excitation is well described within a minimal model Hamiltonian with strong anisotropy and Heisenberg exchange (J 1 = J 2 = 13.9 meV). As a result, the observed behavior places NaOsO 3 on the boundary between localized and itinerant magnetism.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8] ;  [8] ;  [9] ;  [10] ;  [11] ;  [12] ;  [3] ;  [4] ;  [13]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. College London, London (United Kingdom); Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne (Switzlerland)
  3. IFW Dresden, Dresden (Germany)
  4. Univ. College London, London (United Kingdom)
  5. Univ. College London, London (United Kingdom); Diamond Light Source Ltd., Oxfordshire (United Kingdom)
  6. European Synchrotron Radiation Facility, Grenoble Cedex (France)
  7. Brookhaven National Lab. (BNL), Upton, NY (United States); Chinese Academy of Sciences (CAS), Beijing (China)
  8. Argonne National Lab. (ANL), Argonne, IL (United States)
  9. Chinese Academy of Sciences (CAS), Beijing (China); National Institute for Materials Science, Ibaraki (Japan)
  10. National Institute for Materials Science, Ibaraki (Japan)
  11. National Institute for Materials Science, Ibaraki (Japan); Hokkaido Univ., Hokkaido (Japan)
  12. Brookhaven National Lab. (BNL), Upton, NY (United States)
  13. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Report Number(s):
BNL-203590-2018-JAAM
Journal ID: ISSN 2469-9950; PRBMDO; 132622; TRN: US1702653
Grant/Contract Number:
AC02-06CH11357; SC00112704; SC0012704
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 2; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
Chinese Academy of Sciences (CAS); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE
OSTI Identifier:
1369058
Alternate Identifier(s):
OSTI ID: 1341272; OSTI ID: 1435736

Calder, S., Vale, J. G., Bogdanov, N., Donnerer, C., Pincini, D., Sala, M. Moretti, Liu, X., Upton, M. H., Casa, D., Shi, Y. G., Tsujimoto, Y., Yamaura, K., Hill, J. P., van den Brink, J., McMorrow, D. F., and Christianson, A. D.. Strongly gapped spin-wave excitation in the insulating phase of NaOsO3. United States: N. p., Web. doi:10.1103/PhysRevB.95.020413.
Calder, S., Vale, J. G., Bogdanov, N., Donnerer, C., Pincini, D., Sala, M. Moretti, Liu, X., Upton, M. H., Casa, D., Shi, Y. G., Tsujimoto, Y., Yamaura, K., Hill, J. P., van den Brink, J., McMorrow, D. F., & Christianson, A. D.. Strongly gapped spin-wave excitation in the insulating phase of NaOsO3. United States. doi:10.1103/PhysRevB.95.020413.
Calder, S., Vale, J. G., Bogdanov, N., Donnerer, C., Pincini, D., Sala, M. Moretti, Liu, X., Upton, M. H., Casa, D., Shi, Y. G., Tsujimoto, Y., Yamaura, K., Hill, J. P., van den Brink, J., McMorrow, D. F., and Christianson, A. D.. 2017. "Strongly gapped spin-wave excitation in the insulating phase of NaOsO3". United States. doi:10.1103/PhysRevB.95.020413. https://www.osti.gov/servlets/purl/1369058.
@article{osti_1369058,
title = {Strongly gapped spin-wave excitation in the insulating phase of NaOsO3},
author = {Calder, S. and Vale, J. G. and Bogdanov, N. and Donnerer, C. and Pincini, D. and Sala, M. Moretti and Liu, X. and Upton, M. H. and Casa, D. and Shi, Y. G. and Tsujimoto, Y. and Yamaura, K. and Hill, J. P. and van den Brink, J. and McMorrow, D. F. and Christianson, A. D.},
abstractNote = {NaOsO3 hosts a rare manifestation of a metal-insulator transition driven by magnetic correlations, placing the magnetic exchange interactions in a central role. We use resonant inelastic x-ray scattering to directly probe these magnetic exchange interactions. A dispersive and strongly gapped (58 meV) excitation is observed indicating appreciable spin-orbit coupling in this 5d3 system. The excitation is well described within a minimal model Hamiltonian with strong anisotropy and Heisenberg exchange (J1 = J2 = 13.9 meV). As a result, the observed behavior places NaOsO3 on the boundary between localized and itinerant magnetism.},
doi = {10.1103/PhysRevB.95.020413},
journal = {Physical Review B},
number = 2,
volume = 95,
place = {United States},
year = {2017},
month = {1}
}

Works referenced in this record:

Metal-insulator transitions
journal, October 1998
  • Imada, Masatoshi; Fujimori, Atsushi; Tokura, Yoshinori
  • Reviews of Modern Physics, Vol. 70, Issue 4, p. 1039-1263
  • DOI: 10.1103/RevModPhys.70.1039