by Vale, J. G., Calder, S., Bogdanov, N. A., Donnerer, C., Moretti Sala, Marco, Davies, N. R., Mandrus, D., van den Brink, J., Christianson, A. D. and McMorrow, D. F.
Abstract:
High-resolution resonant inelastic x-ray scattering measurements (Delta E = 46 meV) have been performed on Cd2Os2O7 through the metal-to-insulator transition (MIT). A magnetic excitation at 125 meV evolves continuously through the MIT, in agreement with recent Raman-scattering results, and provides further confirmation for an all-in all-out magnetic ground state. Asymmetry of this feature is likely a result of coupling between the electronic and the magnetic degrees of freedom. We also observe a broad continuum of interband excitations centered at 0.3 eV energy loss. This is indicative of significant hybridization between Os 5d and O 2p states and the concurrent itinerant nature of the system. In turn, this suggests a possible breakdown of the free-ion model for Cd2Os2O7.
Reference:
Spin and orbital excitations through the metal-to-insulator transition in Cd2Os2O7 probed with high-resolution resonant inelastic x-ray scattering (Vale, J. G., Calder, S., Bogdanov, N. A., Donnerer, C., Moretti Sala, Marco, Davies, N. R., Mandrus, D., van den Brink, J., Christianson, A. D. and McMorrow, D. F.), In PHYSICAL REVIEW B, AMER PHYSICAL SOC, volume 101, 2020.
Bibtex Entry:
@Article{ISI:000509473800006,
author = {Vale, J. G. and Calder, S. and Bogdanov, N. A. and Donnerer, C. and Moretti Sala, Marco and Davies, N. R. and Mandrus, D. and van den Brink, J. and Christianson, A. D. and McMorrow, D. F.},
journal = {{PHYSICAL REVIEW B}},
title = {{Spin and orbital excitations through the metal-to-insulator transition in Cd2Os2O7 probed with high-resolution resonant inelastic x-ray scattering}},
year = {{2020}},
issn = {{2469-9950}},
month = {{JAN 27}},
number = {{1}},
volume = {{101}},
abstract = {{High-resolution resonant inelastic x-ray scattering measurements (Delta
E = 46 meV) have been performed on Cd2Os2O7 through the
metal-to-insulator transition (MIT). A magnetic excitation at 125 meV
evolves continuously through the MIT, in agreement with recent
Raman-scattering results, and provides further confirmation for an
all-in all-out magnetic ground state. Asymmetry of this feature is
likely a result of coupling between the electronic and the magnetic
degrees of freedom. We also observe a broad continuum of interband
excitations centered at 0.3 eV energy loss. This is indicative of
significant hybridization between Os 5d and O 2p states and the
concurrent itinerant nature of the system. In turn, this suggests a
possible breakdown of the free-ion model for Cd2Os2O7.}},
address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
affiliation = {{Vale, JG (Corresponding Author), UCL, London Ctr Nanotechnol, Gower St, London WC1E 6BT, England. Vale, JG (Corresponding Author), Ecole Polytech Fed Lausanne, Lab Quantum Magnetism, CH-1015 Lausanne, Switzerland. Vale, J. G.; Donnerer, C.; McMorrow, D. F., UCL, London Ctr Nanotechnol, Gower St, London WC1E 6BT, England. Vale, J. G., Ecole Polytech Fed Lausanne, Lab Quantum Magnetism, CH-1015 Lausanne, Switzerland. Calder, S.; Christianson, A. D., Oak Ridge Natl Lab, Neutron Scattering Div, POB 2009, Oak Ridge, TN 37831 USA. Bogdanov, N. A.; van den Brink, J., IFW Dresden, Inst Theoret Solid State Phys, D-01171 Dresden, Germany. Bogdanov, N. A., Max Planck Inst Solid State Res, Heisenbergstr 1, D-70569 Stuttgart, Germany. Sala, M. Moretti, ESRF, CS 40220, F-38043 Grenoble, France. Davies, N. R., Univ Oxford, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England. Mandrus, D., Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. Mandrus, D.; Christianson, A. D., Oak Ridge Natl Lab, Mat Sci & Technol Div, POB 2009, Oak Ridge, TN 37831 USA. Christianson, A. D., Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Sala, M. Moretti, Politech Milano, Dept Phys, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy.}},
article-number = {{014441}},
author-email = {{j.vale@ucl.ac.uk caldersa@ornl.gov}},
da = {{2020-12-22}},
doc-delivery-number = {{KF8FX}},
doi = {{10.1103/PhysRevB.101.014441}},
eissn = {{2469-9969}},
funding-acknowledgement = {{Engineering and Physical Sciences Research CouncilEngineering & Physical Sciences Research Council (EPSRC) {[}EP/N027671/1, EP/N034872/1]; Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy (DOE)United States Department of Energy (DOE); University College London (UCL); Ecole Polytechnique Federale de Lausanne (EPFL); U.S. Department of Energy, Office of Science - Basic Energy Sciences (BES), Materials Sciences and Engineering DivisionUnited States Department of Energy (DOE)}},
funding-text = {{Research in London was supported by the Engineering and Physical Sciences Research Council (Grants No. EP/N027671/1 and No. EP/N034872/1). Work at ORNL's High Flux Isotope Reactor was supported by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy (DOE). J.G.V. would like to thank University College London (UCL) and Ecole Polytechnique Federale de Lausanne (EPFL) for financial support through a UCL Impact award. A.D.C. and D.M. acknowledges support from the U.S. Department of Energy, Office of Science - Basic Energy Sciences (BES), Materials Sciences and Engineering Division.}},
journal-iso = {{Phys. Rev. B}},
keywords-plus = {{BASIS-SETS}},
language = {{English}},
number-of-cited-references = {{39}},
oa = {{Green Published}},
orcid-numbers = {{Bogdanov, Nikolay A./0000-0002-5437-4919}},
publisher = {{AMER PHYSICAL SOC}},
research-areas = {{Materials Science; Physics}},
researcherid-numbers = {{van den Brink, Jeroen/Y-3931-2019 Bogdanov, Nikolay A./AAD-4394-2019}},
times-cited = {{1}},
type = {{Article}},
unique-id = {{ISI:000509473800006}},
usage-count-last-180-days = {{2}},
usage-count-since-2013 = {{10}},
web-of-science-categories = {{Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter}},
}
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