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Raman scattering signatures of Kitaev spin liquids in A2IrO3 iridates with A=Na or Li

Abstract:
We show how Raman spectroscopy can serve as a valuable tool for diagnosing quantum spin liquids (QSL). We find that the Raman response of the gapless QSL of the Kitaev-Heisenberg model exhibits signatures of spin fractionalization into Majorana fermions, which give rise to a broad signal reflecting their density of states, and Z2 gauge fluxes, which also contribute a sharp feature. We discuss the current experimental situation and explore more generally the effect of breaking the integrability on response functions of Kitaev spin liquids.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/physrevlett.113.187201

Authors

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author


Publisher:
American Physical Society
Journal:
Physical Review Letters More from this journal
Volume:
113
Issue:
18
Pages:
ARTN 187201
Publication date:
2014-10-28
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Pmid:
25396391


Language:
English
Keywords:
Pubs id:
pubs:523023
UUID:
uuid:e4685ab6-94b8-4901-b1a6-966462d6bfcb
Local pid:
pubs:523023
Source identifiers:
523023
Deposit date:
2018-04-21
ARK identifier:

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