Onset of the Meissner effect at 65 K in FeSe thin film grown on Nb-doped SrTiO3 substrate

被引：99

作者：

Zhang, Zuocheng ^{[1
,2
]}

Wang, Yi-Hua ^{[3
,4
]}

Song, Qi ^{[3
,5
]}

Liu, Chang ^{[1
,2
]}

Peng, Rui ^{[3
,5
]}

Moler, K. A. ^{[4
]}

Feng, Donglai ^{[3
,5
]}

Wang, Yayu ^{[1
,2
]}

机构：

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

[2] Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China

[3] Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China

[4] Stanford Univ, Stanford Inst Mat & Energy Sci, Stanford, CA 94305 USA

[5] Fudan Univ, Collaborat Innovat Ctr Adv Microstruct, Shanghai 200433, Peoples R China

来源：

SCIENCE BULLETIN | 2015年 / 60卷 / 14期

关键词：

Meissner effect; FeSe thin film; SrTiO3; substrate; Quasi-two-dimensional superconductors; Iron-based superconductors; HIGH-TEMPERATURE SUPERCONDUCTIVITY; DENSITY; ORIGIN;

D O I：

10.1007/s11434-015-0842-8

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：

We report the Meissner effect studies on an FeSe thin film grown on Nb-doped SrTiO3 substrate by molecular beam epitaxy. Two-coil mutual inductance measurement clearly demonstrates the onset of diamagnetic screening at 65 K, which is consistent with the gap opening temperature determined by previous angle-resolved photoemission spectroscopy results. The applied magnetic field causes a broadening of the superconducting transition near the onset temperature, which is the typical behavior for quasi-two-dimensional superconductors. Our results provide direct evidence that FeSe thin film grown on Nb-doped SrTiO3 substrate has an onset T-C similar to 65 K, which is the highest among all iron-based superconductors discovered so far.

引用

页码：1301 / 1304

页数：4

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