Interaction between Surface Acoustic Wave and Quantum Hall Effects

作     者：刘萧 吴蒙蒙 王任飞 王兴豪 张文锋 董昱江 杜瑞瑞 刘阳 林熙 Xiao Liu;Mengmeng Wu;Renfei Wang;Xinghao Wang;Wenfeng Zhang;Yujiang Dong;Rui-Rui Du;Yang Liu;Xi Lin

作者机构：International Center for Quantum MaterialsPeking UniversityBeijing 100871China Center for ExcellenceUniversity of Chinese Academy of SciencesBeijing 100190China Hefei National LaboratoryHefei 230088China Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced MaterialsPeking UniversityBeijing 100871China 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2024年第41卷第4期

页      面：105-109页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：supported by the National Key Research and Development Program of China(Grant Nos.2021YFA1401900 and 2019YFA0308403) the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB33030000) the National Natural Science Foundation of China(Grant Nos.92065104,12074010,and 12141001) the Innovation Program for Quantum Science and Technology(Grant No.2021ZD0302602)for sample fabrication and measurement 

主　　题：relaxation quantum inconsistent 

摘      要：Surface acoustic wave(SAW)is a powerful technique for investigating quantum phases appearing in twodimensional electron *** electrons respond to the piezoelectric field of SAW through screening,attenuating its amplitude,and shifting its velocity,which is described by the relaxation *** this work,we systematically study this interaction using orders of magnitude lower SAW amplitude than those in previous *** high magnetic fields,when electrons form highly correlated states such as the quantum Hall effect,we observe an anomalously large attenuation of SAW,while the acoustic speed remains considerably high,inconsistent with the conventional relaxation *** anomaly exists only when the SAW power is sufficiently low.