Observation of anomalous amplitude modes in the kagome metal CsV3Sb5

Gan Liu; Xinran Ma; Kuanyu He; Qing Li; Hengxin Tan; Yizhou Liu; Jie Xu; Wenna Tang; Kenji Watanabe; Takashi Taniguchi; Libo Gao; Yaomin Dai; Hai-Hu Wen; Binghai Yan; Xiaoxiang Xi

doi:10.1038/s41467-022-31162-1

Nature Communications (Jun 2022)

Observation of anomalous amplitude modes in the kagome metal CsV3Sb5

Gan Liu,
Xinran Ma,
Kuanyu He,
Qing Li,
Hengxin Tan,
Yizhou Liu,
Jie Xu,
Wenna Tang,
Kenji Watanabe,
Takashi Taniguchi,
Libo Gao,
Yaomin Dai,
Hai-Hu Wen,
Binghai Yan,
Xiaoxiang Xi

Affiliations

Gan Liu: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Xinran Ma: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Kuanyu He: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Qing Li: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Hengxin Tan: Department of Condensed Matter Physics, Weizmann Institute of Science
Yizhou Liu: Department of Condensed Matter Physics, Weizmann Institute of Science
Jie Xu: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Wenna Tang: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Kenji Watanabe: Research Center for Functional Materials, National Institute for Materials Science
Takashi Taniguchi: International Center for Materials Nanoarchitectonics, National Institute for Materials Science
Libo Gao: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Yaomin Dai: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Hai-Hu Wen: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Binghai Yan: Department of Condensed Matter Physics, Weizmann Institute of Science
Xiaoxiang Xi: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University

DOI: https://doi.org/10.1038/s41467-022-31162-1
Journal volume & issue: Vol. 13, no. 1
pp. 1 – 8

Abstract

Read online

The mechanism of the charge density wave in kagome metals is not fully understood. Here, the authors report the observation of unusual large-frequency collective lattice excitations, or amplitude modes, in CsV3Sb5 in the absence of phonon mode softening, evidencing the strong electron-phonon coupling regime.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

About the journal