Phonon Chirality Manipulation Mechanism in Transition-Metal Dichalcogenide Interlayer-Sliding Ferroelectrics

Hao Chen; Qianqian Wang; Xukun Feng; Weikang Wu; Lifa Zhang

doi:10.1021/acs.nanolett.3c03787

Phonon Chirality Manipulation Mechanism in Transition-Metal Dichalcogenide Interlayer-Sliding Ferroelectrics

Nano Lett. 2023 Dec 13;23(23):11266-11271. doi: 10.1021/acs.nanolett.3c03787. Epub 2023 Nov 17.

Authors

Hao Chen^{1

2}, Qianqian Wang³, Xukun Feng³, Weikang Wu⁴, Lifa Zhang²

Affiliations

¹ Department of Physics, University of Science and Technology of China, Hefei 230026, China.
² Phonon Engineering Research Center of Jiangsu Province, Center for Quantum Transport and Thermal Energy Science, Institute of Physics Frontiers and Interdisciplinary Sciences, School of Physics and Technology, Nanjing Normal University, Nanjing 210023, China.
³ Research Laboratory for Quantum Materials, Singapore University of Technology and Design, Singapore 487372, Singapore.
⁴ Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China.

PMID: 37976102
DOI: 10.1021/acs.nanolett.3c03787

Abstract

As an ideal platform, both the theoretical prediction and first experimental verification of chiral phonons are based on transition-metal dichalcogenide materials. The manipulation of phonon chirality in these materials will have a profound effect on the study of chiral phonons. In this work, we utilize the sliding ferroelectric effect to realize the phonon chirality manipulation mechanism in transition-metal dichalcogenide materials. Based on first-principles calculations, we find the different manipulation effects of interlayer sliding on the phonon chirality and Berry curvature in bilayer and four-layer MoS₂ sliding ferroelectrics. These further affect the phonon angular momentum and magnetization under a temperature gradient and the phonon Hall effect under a magnetic field. Our work connects two emerging fields and opens up a new route to manipulating phonon chirality in transition-metal dichalcogenide materials through the sliding ferroelectric mechanism.

Keywords: first-principles calculations; interlayer-sliding ferroelectrics; phonon Berry curvature; phonon Hall effect; phonon chirality manipulation; transition-metal dichalcogenide materials.