Journal article
Dynamics of fractionalization in quantum spin liquids
- Abstract:
- We present the theory of dynamical spin response for the Kitaev honeycomb model, obtaining exact results for the structure factor (SF) in gapped and gapless, Abelian and non-Abelian quantum spin-liquid (QSL) phases. We also describe the advances in methodology necessary to compute these results. The structure factor shows signatures of spin fractionalization into emergent quasiparticles: Majorana fermions and fluxes of Z2 gauge field. In addition to a broad continuum from spin fractionalization, we find sharp (δ-function) features in the response. These arise in two distinct ways: from excited states containing only (static) fluxes and no (mobile) fermions, and from excited states in which fermions are bound to fluxes. The SF is markedly different in Abelian and non-Abelian QSLs, and bound fermion-flux composites appear only in the non-Abelian phase.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
Actions
Access Document
- Files:
-
-
(Preview, Accepted manuscript, pdf, 3.1MB, Terms of use)
-
- Publisher copy:
- 10.1103/PhysRevB.92.115127
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical review B: Condensed matter and materials physics More from this journal
- Volume:
- 92
- Issue:
- 11
- Pages:
- ARTN 115127
- Publication date:
- 2015-09-14
- DOI:
- EISSN:
-
1550-235X
- ISSN:
-
1098-0121
- Keywords:
- Pubs id:
-
pubs:568627
- UUID:
-
uuid:e5acad57-726b-4479-a343-9d478cae820c
- Local pid:
-
pubs:568627
- Source identifiers:
-
568627
- Deposit date:
-
2018-04-21
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2015
- Notes:
- © 2015 American Physical Society. This is the accepted manuscript version of the article. The final version is available online from American Physical Society at: https://doi.org/10.1103/PhysRevB.92.115127
If you are the owner of this record, you can report an update to it here: Report update to this record