Large Oscillatory Thermal Hall Effect in Kagome Metals
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arXiv
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866909309157244928 |
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| author | Zhang, Dechen Chen, Kuan-Wen Zheng, Guoxin Yu, Fanghang Shi, Mengzhu Zhu, Yuan Chan, Aaron Jenkins, Kaila Ying, Jianjun Xiang, Ziji Chen, Xianhui Li, Lu |
| author_facet | Zhang, Dechen Chen, Kuan-Wen Zheng, Guoxin Yu, Fanghang Shi, Mengzhu Zhu, Yuan Chan, Aaron Jenkins, Kaila Ying, Jianjun Xiang, Ziji Chen, Xianhui Li, Lu |
| contents | The thermal Hall effect recently provided intriguing probes to the ground state of exotic quantum matters. These observations of transverse thermal Hall signals lead to the debate on the fermionic versus bosonic origins of these phenomena. The recent report of quantum oscillations (QOs) in Kitaev spin liquid points to a possible resolution. The Landau level quantization would most likely capture only the fermionic thermal transport effect. However, the QOs in the thermal Hall effect are generally hard to detect. In this work, we report the observation of a large oscillatory thermal Hall effect of correlated Kagome metals. We detect a 180-degree phase change of the oscillation and demonstrate the phase flip as an essential feature for QOs in the thermal transport properties. More importantly, the QOs in the thermal Hall channel are more profound than those in the electrical Hall channel, which strongly violates the Wiedemann Franz (WF) law for QOs. This result presents the oscillatory thermal Hall effect as a powerful probe to the correlated quantum materials. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2409_05621 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Large Oscillatory Thermal Hall Effect in Kagome Metals Zhang, Dechen Chen, Kuan-Wen Zheng, Guoxin Yu, Fanghang Shi, Mengzhu Zhu, Yuan Chan, Aaron Jenkins, Kaila Ying, Jianjun Xiang, Ziji Chen, Xianhui Li, Lu Strongly Correlated Electrons The thermal Hall effect recently provided intriguing probes to the ground state of exotic quantum matters. These observations of transverse thermal Hall signals lead to the debate on the fermionic versus bosonic origins of these phenomena. The recent report of quantum oscillations (QOs) in Kitaev spin liquid points to a possible resolution. The Landau level quantization would most likely capture only the fermionic thermal transport effect. However, the QOs in the thermal Hall effect are generally hard to detect. In this work, we report the observation of a large oscillatory thermal Hall effect of correlated Kagome metals. We detect a 180-degree phase change of the oscillation and demonstrate the phase flip as an essential feature for QOs in the thermal transport properties. More importantly, the QOs in the thermal Hall channel are more profound than those in the electrical Hall channel, which strongly violates the Wiedemann Franz (WF) law for QOs. This result presents the oscillatory thermal Hall effect as a powerful probe to the correlated quantum materials. |
| title | Large Oscillatory Thermal Hall Effect in Kagome Metals |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2409.05621 |