Calder, S;
Vale, JG;
Bogdanov, N;
Donnerer, C;
Sala, MM;
Liu, X;
Upton, MH;
... Christianson, AD; + view all
(2017)
Strongly Gapped Spin-Wave Excitation in the Insulating Phase of NaOsO3.
Physical Review B
, 95
(2)
, Article 020413(R). 10.1103/PhysRevB.95.020413.
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Abstract
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). The observed behavior places NaOsO3 on the boundary between localized and itinerant magnetism.
Type: | Article |
---|---|
Title: | Strongly Gapped Spin-Wave Excitation in the Insulating Phase of NaOsO3 |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1103/PhysRevB.95.020413 |
Publisher version: | http://doi.org/10.1103/PhysRevB.95.020413 |
Language: | English |
Additional information: | © 2017 American Physical Society |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
URI: | https://discovery.ucl.ac.uk/id/eprint/1529019 |
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