Unquantized thermal Hall effect in quantum spin liquids with spinon Fermi surfaces

Recent theoretical studies have found quantum spin-liquid states with spinon Fermi surfaces upon the application of a magnetic field on a gapped state with topological order. We investigate the thermal Hall conductivity across this transition, describing how the quantized thermal Hall conductivity o...

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Main Authors: Yanting Teng, Yunchao Zhang, Rhine Samajdar, Mathias S. Scheurer, Subir Sachdev
Format: Article
Language:English
Published: American Physical Society 2020-08-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.2.033283
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author Yanting Teng
Yunchao Zhang
Rhine Samajdar
Mathias S. Scheurer
Subir Sachdev
author_facet Yanting Teng
Yunchao Zhang
Rhine Samajdar
Mathias S. Scheurer
Subir Sachdev
author_sort Yanting Teng
collection DOAJ
description Recent theoretical studies have found quantum spin-liquid states with spinon Fermi surfaces upon the application of a magnetic field on a gapped state with topological order. We investigate the thermal Hall conductivity across this transition, describing how the quantized thermal Hall conductivity of the gapped state changes to an unquantized thermal Hall conductivity in the gapless spinon Fermi surface state. We consider two cases, both of potential experimental interest: the state with non-Abelian Ising topological order on the honeycomb lattice and the state with Abelian chiral spin-liquid topological order on the triangular lattice.
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spelling doaj.art-0a390b36e94d411e86f485bff01268942024-04-12T16:59:18ZengAmerican Physical SocietyPhysical Review Research2643-15642020-08-012303328310.1103/PhysRevResearch.2.033283Unquantized thermal Hall effect in quantum spin liquids with spinon Fermi surfacesYanting TengYunchao ZhangRhine SamajdarMathias S. ScheurerSubir SachdevRecent theoretical studies have found quantum spin-liquid states with spinon Fermi surfaces upon the application of a magnetic field on a gapped state with topological order. We investigate the thermal Hall conductivity across this transition, describing how the quantized thermal Hall conductivity of the gapped state changes to an unquantized thermal Hall conductivity in the gapless spinon Fermi surface state. We consider two cases, both of potential experimental interest: the state with non-Abelian Ising topological order on the honeycomb lattice and the state with Abelian chiral spin-liquid topological order on the triangular lattice.http://doi.org/10.1103/PhysRevResearch.2.033283
spellingShingle Yanting Teng
Yunchao Zhang
Rhine Samajdar
Mathias S. Scheurer
Subir Sachdev
Unquantized thermal Hall effect in quantum spin liquids with spinon Fermi surfaces
Physical Review Research
title Unquantized thermal Hall effect in quantum spin liquids with spinon Fermi surfaces
title_full Unquantized thermal Hall effect in quantum spin liquids with spinon Fermi surfaces
title_fullStr Unquantized thermal Hall effect in quantum spin liquids with spinon Fermi surfaces
title_full_unstemmed Unquantized thermal Hall effect in quantum spin liquids with spinon Fermi surfaces
title_short Unquantized thermal Hall effect in quantum spin liquids with spinon Fermi surfaces
title_sort unquantized thermal hall effect in quantum spin liquids with spinon fermi surfaces
url http://doi.org/10.1103/PhysRevResearch.2.033283
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AT mathiassscheurer unquantizedthermalhalleffectinquantumspinliquidswithspinonfermisurfaces
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