Interface-Induced High-Temperature Superconductivity in Single Unit-Cell FeSe Films on SrTiO3

被引：1181

作者：

Wang Qing-Yan ^{[1
,2
]}

Li Zhi ^{[1
]}

Zhang Wen-Hao ^{[2
]}

Zhang Zuo-Cheng ^{[2
]}

Zhang Jin-Song ^{[2
]}

Li Wei ^{[2
]}

Ding Hao ^{[2
]}

Ou Yun-Bo ^{[1
]}

Deng Peng ^{[2
]}

Chang Kai ^{[2
]}

Wen Jing ^{[2
]}

Song Can-Li ^{[2
]}

He Ke ^{[1
]}

Jia Jin-Feng ^{[2
]}

Ji Shuai-Hua ^{[2
]}

Wang Ya-Yu ^{[2
]}

Wang Li-Li ^{[1
]}

Chen Xi ^{[2
]}

Ma Xu-Cun ^{[1
]}

Xue Qi-Kun ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[2] Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2012年 / 29卷 / 03期

基金：

中国国家自然科学基金;

关键词：

COMPOUND; PRESSURE;

D O I：

10.1088/0256-307X/29/3/037402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report high transition temperature superconductivity in one unit-cell (UC) thick FeSe films grown on a Se-etched SrTiO3(001) substrate by molecular beam epitaxy (MBE). A superconducting gap as large as 20 meV and the magnetic field induced vortex state revealed by in situ scanning tunneling microscopy (STM) suggest that the superconductivity of the 1 UC FeSe films could occur around 77 K. The control transport measurement shows that the onset superconductivity temperature is well above 50 K. Our work not only demonstrates a powerful way for finding new superconductors and for raising T-C, but also provides a well-defined platform for systematic studies of the mechanism of unconventional superconductivity by using different superconducting materials and substrates.

引用

页数：4

共 50 条

[31] Topological edge states in high-temperature superconductiving FeSe/SrTiO3 films with Te substitution
Li Chen
Hongmei Liu
Chuan Jiang
Changmin Shi
Dongchao Wang
Guangliang Cui
Xiaolong Li
Qiandong Zhuang
Scientific Reports, 9
[32] Superconductivity of the FeSe/SrTiO3 Interface in View of BCS–BEC Crossover
张书源
苗光耀
关佳其
徐小凤
刘冰
杨芳
王炜华
朱学涛
郭建东
Chinese Physics Letters, 2019, 36 (10) : 107 - 111
[33] Molecular beam epitaxy of single unit- cell FeSe superconducting films on SrTiO3 (001)
Wang Meng
Ou Yun-Bo
Li Fang-Sen
Zhang Wen-Hao
Tang Chen-Jia
Wang Li-Li
Xue Qi-Kun
Ma Xu-Cun
ACTA PHYSICA SINICA, 2014, 63 (02)
[34] Superconductivity above 100 K in single-layer FeSe films on doped SrTiO3
Jian-Feng Ge
Zhi-Long Liu
Canhua Liu
Chun-Lei Gao
Dong Qian
Qi-Kun Xue
Ying Liu
Jin-Feng Jia
Nature Materials, 2015, 14 : 285 - 289
[35] Superconductivity above 100 K in single-layer FeSe films on doped SrTiO3
Ge, Jian-Feng
Liu, Zhi-Long
Liu, Canhua
Gao, Chun-Lei
Qian, Dong
Xue, Qi-Kun
Liu, Ying
Jia, Jin-Feng
NATURE MATERIALS, 2015, 14 (03) : 285 - 289
[36] DETERMINATION OF THE UNIT-CELL PARAMETER OF A SRTIO3 CRYSTAL
PODUS, LP
TARASENKO, LM
ALI, AA
INORGANIC MATERIALS, 1988, 24 (01) : 78 - 80
[37] Superconductivity of the FeSe/SrTiO3 Interface in View of BCS-BEC Crossover
Zhang, Shuyuan
Miao, Guangyao
Guan, Jiaqi
Xu, Xiaofeng
Liu, Bing
Yang, Fang
Wang, Weihua
Zhu, Xuetao
Guo, Jiandong
CHINESE PHYSICS LETTERS, 2019, 36 (10)
[38] Growth and characterization of high-quality FeSe thin films on SrTiO3 with enhanced superconductivity
Zhao, Zhanyi
Wei, Zhongxu
Yu, Xiaodong
Dong, Wenfeng
Huang, Jierui
Chen, Congrun
Feng, Zhongpei
Qin, Mingyang
Wang, Xuewei
Cao, Shenggen
Huan, Qing
Li, Yangmu
Yuan, Jie
Zhu, Beiyi
Chen, Qihong
Sun, Yujie
Wang, Lili
Qian, Tian
Jin, Kui
PHYSICAL REVIEW B, 2024, 110 (14)
[39] Unit-cell by unit-cell epitaxial growth of SrTiO3 and BaTiO3 thin films by laser molecular beam epitaxy
Yang, GZ
Lu, HB
Wang, HS
Cui, DF
Yang, HQ
Wang, H
Zhou, YL
Chen, ZH
CHINESE PHYSICS LETTERS, 1997, 14 (06) : 478 - 480
[40] High- Temperature Superconductivity and Lattice Relaxation in Lithium- Deposited FeSe on SrTiO3
Phan, Giao N.
Nakayama, Kosuke
Kanayama, Shota
Kuno, Masato
Sugawara, Katsuaki
Sato, Takafumi
Takahashi, Takashi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2017, 86 (03)

← 1 2 3 4 5 →