Discovery of log-periodic oscillations in ultraquantum topological materials

被引：58

作者：

Wang, Huichao ^{[1
,2
,3
]}

Liu, Haiwen ^{[4
]}

Li, Yanan ^{[1
,2
]}

Liu, Yongjie ^{[5
]}

Wang, Junfeng ^{[5
]}

Liu, Jun ^{[6
]}

Dai, Ji-Yan ^{[3
]}

Wang, Yong ^{[6
]}

Li, Liang ^{[5
]}

Yan, Jiaqiang ^{[7
]}

Mandrus, David ^{[7
,8
]}

Xie, X. C. ^{[1
,2
,9
]}

Wang, Jian ^{[1
,2
,9
]}

机构：

[1] Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China

[2] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

[3] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

[4] Beijing Normal Univ, Dept Phys, Ctr Adv Quantum Studies, Beijing 100875, Peoples R China

[5] Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Hubei, Peoples R China

[6] Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Ctr Electron Microscopy, Hangzhou 310027, Zhejiang, Peoples R China

[7] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[8] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[9] Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China

来源：

SCIENCE ADVANCES | 2018年 / 4卷 / 11期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

ZRTE5; RESISTIVITY; TRANSITION; SURFACE; GROWTH; STATES; GAS;

D O I：

10.1126/sciadv.aau5096

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Quantum oscillations are usually the manifestation of the underlying physical nature in condensed matter systems. Here, we report a new type of log-periodic quantum oscillations in ultraquantum three-dimensional topological materials. Beyond the quantum limit (QL), we observe the log-periodic oscillations involving up to five oscillating cycles (five peaks and five dips) on the magnetoresistance of high-quality single-crystal ZrTe5, virtually showing the clearest feature of discrete scale invariance (DSI). Further, theoretical analyses show that the two-body quasi-bound states can be responsible for the DSI feature. Our work provides a new perspective on the ground state of topological materials beyond the QL.

引用

页数：8

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