Proximity-effect-induced superconducting phase in the topological insulator Bi2Se3

被引：56

作者：

Yang, Fan ^{[1
]}

Qu, Fanming ^{[1
]}

Shen, Jie ^{[1
]}

Ding, Yue ^{[1
]}

Chen, Jun ^{[1
]}

Ji, Zhongqing ^{[1
]}

Liu, Guangtong ^{[1
]}

Fan, Jie ^{[1
]}

Yang, Changli ^{[1
]}

Fu, Liang ^{[2
]}

Lu, Li ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Daniel Chee Tsui Lab, Beijing 100190, Peoples R China

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

来源：

PHYSICAL REVIEW B | 2012年 / 86卷 / 13期

关键词：

EXCITATION SPECTRUM; JUNCTIONS; TRANSPORT; EQUATION; SURFACE;

D O I：

10.1103/PhysRevB.86.134504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the electron transport properties of topological insulator-related material Bi2Se3 near the superconducting Pb-Bi2Se3 interface, and found that a superconducting state is induced over an extended volume in Bi2Se3. This state can carry a Josephson supercurrent, and demonstrates a gaplike structure in the conductance spectra as probed by a normal-metal electrode. The establishment of the gap is not by confining the electrons into a narrow space close to the superconductor-normal metal interface, as previously observed in other systems, but presumably via electron-electron attractive interaction in Bi2Se3.

引用

页数：5

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