Unconventional Hysteretic Transition in a Charge Density Wave

被引：24

作者：

Lv, B. Q. ^{[1
]}

Zong, Alfred ^{[1
,2
]}

Wu, D. ^{[3
,4
]}

V. Rozhkov, A. ^{[5
]}

V. Fine, Boris ^{[6
,7
]}

Chen, Su-Di ^{[8
,9
,10
]}

Hashimoto, Makoto ^{[11
]}

Lu, Dong-Hui ^{[11
]}

Li, M. ^{[12
]}

Huang, Y. -B. ^{[12
]}

Ruff, Jacob P. C. ^{[13
]}

Walko, Donald A. ^{[14
]}

Chen, Z. H. ^{[12
]}

Hwang, Inhui ^{[14
]}

Su, Yifan ^{[1
]}

Shen, Xiaozhe ^{[15
]}

Wang, Xirui ^{[1
]}

Han, Fei ^{[16
]}

Po, Hoi Chun ^{[1
,20
]}

Wang, Yao ^{[17
]}

Jarillo-Herrero, Pablo ^{[1
]}

Wang, Xijie

Zhou, Hua ^{[14
]}

Sun, Cheng-Jun ^{[14
]}

Wen, Haidan ^{[14
,18
]}

Shen, Zhi-Xun ^{[9
,10
]}

Wang, N. L. ^{[3
,19
]}

Gedik, Nuh ^{[1
]}

机构：

[1] MIT, Dept Phys, Cambridge, MA 02139 USA

[2] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

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

[4] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China

[5] Russian Acad Sci, Inst Theoret & Appl Electrodynam, Moscow 125412, Russia

[6] Moscow Inst Phys & Technol, Lab Phys Complex Quantum Syst, Inst Sky Pereulok 9, Dolgoprudnyi 141701, Russia

[7] Univ Leipzig, Inst Theoret Phys, Bruderstr 16, D-04103 Leipzig, Germany

[8] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

[9] SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA

[10] Stanford Univ, Menlo Pk, CA 94025 USA

[11] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA

[12] Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

[13] Cornell Univ, CHESS, Ithaca, NY 14853 USA

[14] Argonne Natl Lab, Adv Photon Source, Lemont, IL 60439 USA

[15] SLAC Natl Accelerator Lab, Menlo Pk, CA USA

[16] MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[17] Clemson Univ, Dept Phys & Astron, Clemson, SC 29631 USA

[18] Argonne Natl Lab, Mat Sci Div, Lemont, IL 60439 USA

[19] Beijing Acad Quantum Informat Sci, Beijing 100913, Peoples R China

[20] Hong Kong Univ Sci & Technol, Dept Phys, Clear Water Bay, Hong Kong, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 03期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

DOMAIN-WALLS; STATE; PHASE; PRESSURE; DYNAMICS; SURFACE;

D O I：

10.1103/PhysRevLett.128.036401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Hysteresis underlies a large number of phase transitions in solids, giving rise to exotic metastable states that are otherwise inaccessible. Here, we report an unconventional hysteretic transition in a quasi-2D material, EuTe4. By combining transport, photoemission, diffraction, and x-ray absorption measurements, we observe that the hysteresis loop has a temperature width of more than 400 K, setting a record among crystalline solids. The transition has an origin distinct from known mechanisms, lying entirely within the incommensurate charge density wave (CDW) phase of EuTe4 with no change in the CDW modulation periodicity. We interpret the hysteresis as an unusual switching of the relative CDW phases in different layers, a phenomenon unique to quasi-2D compounds that is not present in either purely 2D or strongly coupled 3D systems. Our findings challenge the established theories on metastable states in density wave systems, pushing the boundary of understanding hysteretic transitions in a broken-symmetry state.

引用

页数：7

共 45 条

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