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Magnetic field dependence of excitations near spin-orbital quantum criticality

Abstract:

The spinel FeSc2S4 has been proposed to realize a near-critical spin-orbital singlet (SOS) state, where entangled spin and orbital moments fluctuate in a global singlet state on the verge of spin and orbital order. Here we report powder inelastic neutron scattering measurements that observe the full bandwidth of magnetic excitations and we find that spin-orbital triplon excitations of an SOS state can capture well key aspects of the spectrum in both zero and a...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted manuscript

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Publisher copy:
10.1103/physrevlett.118.067205

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Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Cheptiakov, D More by this author
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European Commision : Marie Curie programme More from this funder
Sinergia Network Mott Physics Beyond the Heisenberg Model More from this funder
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Grant:
Hyper Quantum Criticality (HyperQC)
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Publisher:
American Physical Society Publisher's website
Journal:
Physical Review Letters Journal website
Volume:
118
Issue:
6
Pages:
067205
Publication date:
2017-02-10
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Pubs id:
pubs:631543
URN:
uri:75f70719-34db-47ff-a17f-ade4c3d4e788
UUID:
uuid:75f70719-34db-47ff-a17f-ade4c3d4e788
Local pid:
pubs:631543

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