| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Two-Dimensional Thermal Regulation Based on Non-Hermitian Skin Effect |
| Qiang-Kai-Lai Huang1,2,3,4, Yun-Kai Liu5, Pei-Chao Cao1,2,3,4, Xue-Feng Zhu5*, and Ying Li1,2,3,4* |
1Interdisciplinary Center for Quantum Information, State Key Laboratory of Extreme Photonics and Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China
2International Joint Innovation Center, The Electromagnetics Academy at Zhejiang University, Zhejiang University, Haining 314400, China
3Key Laboratory of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, Jinhua Institute of Zhejiang University, Zhejiang University, Jinhua 321099, China
4Shaoxing Institute of Zhejiang University, Zhejiang University, Shaoxing 312000, China
5School of Physics and Innovation Institute, Huazhong University of Science and Technology, Wuhan 430074, China
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| Cite this article: |
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Qiang-Kai-Lai Huang, Yun-Kai Liu, Pei-Chao Cao et al 2023 Chin. Phys. Lett. 40 106601 |
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Abstract The non-Hermitian skin effect has been applied in multiple fields. However, there are relatively few models in the field of thermal diffusion that utilize the non-Hermitian skin effect for achieving thermal regulation. Here, we propose two non-Hermitian Su–Schrieffer–Heeger (SSH) models for thermal regulation: one capable of achieving edge states, and the other capable of achieving corner states within the thermal field. By analyzing the energy band structures and the generalized Brillouin zone, we predict the appearance of the non-Hermitian skin effect in these two models. Furthermore, we analyze the time-dependent evolution results and assess the robustness of the models. The results indicate that the localized thermal effects of the models align with our predictions. In a word, this work presents two models based on the non-Hermitian skin effect for regulating the thermal field, injecting vitality into the design of non-Hermitian thermal diffusion systems.
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Received: 25 July 2023
Editors' Suggestion
Published: 26 September 2023
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| PACS: |
66.70.-f
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(Nonelectronic thermal conduction and heat-pulse propagation in solids;thermal waves)
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05.70.-a
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(Thermodynamics)
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44.10.+i
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(Heat conduction)
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