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- Oh, Yoon Seok
- Laboratory for Strong Correlation in Quantum Materials
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Significant thermal Hall effect in the 3d cobalt Kitaev system Na2Co2TeO6
- Author(s)
- Yang, Heejun, Kim, Chaebin, Choi, Ysun, Lee, Jun Han, Lin, Gaoting, Ma, Jie, Kratochvílová, Marie, Proschek, Petr, Moon, Eun-Gook, Lee, Ki Hoon, Oh, Yoon Seok, Park, Je-Geun
- Issued Date
- 2022-08
- Citation
- PHYSICAL REVIEW B, v.106, no.8, pp.L081116
- Abstract
-
Kitaev physics has recently attracted attention in condensed matter for its anticipated quantum spin liquid
(QSL) state. The thermal transport measurement is crucial for probing the features of charge-neutral quasiparticles. In this letter, we report a significant thermal Hall effect in Na2Co2TeO6 (NCTO), a Kitaev QSL candidate, when the magnetic field is applied along the out-of-plane direction of the honeycomb plane. The thermal conductivity (κxx ) and thermal Hall conductivity (κxy) in NCTO reveal distinct magnetic field dependences below and above the Neel temperature (TN ) of 27 K. For T > TN, κxx has a monotonic decrease in the field dependence, while κxy persists up to T ∗ = 150 K. On the other hand, both κxx and κxy exhibit complex field dependence for
T < TN.
- Publisher
- AMER PHYSICAL SOC
- ISSN
- 2469-9950
- Keyword
- QUANTUM SPIN LIQUID, STATE, EXCITATIONS, CONDUCTIVITY
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