25–29 Aug 2025
NCTS-Phys Lecture Hall, 4F, Chee-Chun Leung Cosmology Hall, National Taiwan University
Asia/Taipei timezone

Analysis of thermal Hall conductivity in a kagome lattice antiferromagnet using a tensor network method

28 Aug 2025, 16:30
3m
Poster presentation Poster

Speaker

Yuma Nakanishi (University of Tokyo)

Description

Although kagome lattice antiferromagnets are expected to host a wealth of quantum phases, many aspects of their physical properties remain unresolved, requiring further investigation. In this poster, we focus on the thermal Hall conductivity, which contains information about quasiparticle excitations, and report finite-temperature results obtained with tensor-network methods. In particular, we show that within the 1/9-magnetization plateau region, the thermal Hall conductivity changes sign, revealing a striking heat-transport anomaly that points to the emergence of an exotic quantum state.

Primary author

Yuma Nakanishi (University of Tokyo)

Co-authors

Kota Ido (Institute for Solid State Physics, University of Tokyo) Satoshi Morita (Keio University) Takahiro Misawa (Institute for Solid State Physics, University of Tokyo) Tsuyoshi Okubo (Institute for Physics of Intelligence, The University of Tokyo) Youhei Yamaji (National Institute for Materials Science)

Presentation materials

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