Superconductor-Metal Quantum Transition at the EuO/KTaO3 Interface*

被引：21
|
作者：
Ma, Yang [1 ]
Niu, Jiasen [1 ]
Xing, Wenyu [1 ]
Yao, Yunyan [1 ]
Cai, Ranran [1 ]
Sun, Jirong [2 ,3 ,4 ]
Xie, X. C. [1 ,5 ,6 ]
Lin, Xi [1 ,5 ,6 ]
Han, Wei [1 ]
机构：
[1] Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China
[2] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[4] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
[5] Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China
[6] Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2020年 / 37卷 / 11期
基金：
国家重点研发计划; 中国国家自然科学基金; 北京市自然科学基金;
关键词：
74; 78; -w; 73; 40; -c; 43; Nq; GRIFFITHS SINGULARITY; COEXISTENCE; ORDER;
D O I：
10.1088/0256-307X/37/11/117401
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report the experimental investigation of the superconductor-metal quantum phase transition of the EuO/KTaO3 interface. Around the transition, a divergence of the dynamical critical exponent is observed, which supports the quantum Griffiths singularity in the EuO/KTaO3 interface. The quantum Griffiths singularity could be attributed to large rare superconducting regions and quenched disorders at the interface. Our results could pave the way for studying the exotic superconducting properties at the EuO/KTaO3 interface.
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页数：5
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