Effect of Fermi surface evolution on superconducting gap in superconducting topological insulator

被引：15

作者：

Hashimoto, Tatsuki ^{[1
]}

Yada, Keiji ^{[1
]}

Yamakage, Ai ^{[1
]}

Sato, Masatoshi ^{[1
]}

Tanaka, Yukio ^{[1
]}

机构：

[1] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2014年 / 27卷 / 10期

关键词：

topological superconductor; topological insulator; superconducting topological insulator; pairing symmetry; bulk electronic properties; SINGLE DIRAC CONE; TUNNELING SPECTROSCOPY; CONDUCTANCE;

D O I：

10.1088/0953-2048/27/10/104002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We study the bulk electronic states of a superconducting topological insulator, which is a promising candidate topological superconductors. Recent experiments suggest that the three-dimensional Fermi surface evolves into two-dimensional one. We show that the superconducting energy gap structure on the Fermi surface systematically changes with this evolution. It is clarified that the bulk electronic properties, such as spin-lattice relaxation rate and specific heat, depend on the shape of the Fermi surface and the type of the energy gap function. These results serve as a guide to determine the pairing symmetry of CuxBi2Se3.

引用

页数：9

共 50 条

[41] Superconducting proximity effects in Sb-doped Bi2Se3 topological insulator nanoribbon [J].

Park, Sang-Il ;

Kim, Hong-Seok ;

Hou, Yasen ;

Yu, Dong ;

Doh, Yong-Joo .

PROGRESS IN SUPERCONDUCTIVITY AND CRYOGENICS, 2019, 21 (04) :13-18

[42] Magnetotransport Signatures of Superconducting Cooper Pairs Carried by Topological Surface States in Bismuth Selenide [J].

Kumar, Raj ;

Ciobanu, Cristian V. ;

Rathi, Somilkumar J. ;

Brom, Joseph E. ;

Redwing, Joan M. ;

Hunte, Frank .

NANO LETTERS, 2023, 23 (22) :10267-10273

[43] Fermi level engineering of topological insulator films by tuning the substrates [J].

Liu, Wenliang ;

Peng, Xiangyang ;

Yang, Hong ;

Wei, Xiaolin ;

Zhong, Jianxin .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2015, 27 (43)

[44] Magneto transport on the surface of a topological insulator spin valve [J].

Soodchomshom, Bumned .

PHYSICS LETTERS A, 2010, 374 (28) :2894-2899

[45] The superconducting diode effect [J].

Nadeem, Muhammad ;

Fuhrer, Michael S. ;

Wang, Xiaolin .

NATURE REVIEWS PHYSICS, 2023, 5 (10) :558-577

[46] Signatures of Topological Superconductivity in Bulk-Insulating Topological Insulator BiSbTe1.25Se1.75 in Proximity with Superconducting NbSe2 [J].

Banerjee, Abhishek ;

Sundaresh, Ananthesh ;

Ganesan, Rajamanickam ;

Kumar, P. S. Anil .

ACS NANO, 2018, 12 (12) :12665-12672

[47] Molecular beam epitaxy of superconducting PdTe2 films on topological insulator Bi2Te3 [J].

HuanYi Xue ;

Hao Yang ;

YanFu Wu ;

Gang Yao ;

DanDan Guan ;

ShiYong Wang ;

Hao Zheng ;

CanHua Liu ;

YaoYi Li ;

JinFeng Jia .

Science China Physics, Mechanics & Astronomy, 2019, 62

[48] Collective excitations on a surface of topological insulator [J].

Efimkin, Dmitry K. ;

Lozovik, Yurii E. ;

Sokolik, Alexey A. .

NANOSCALE RESEARCH LETTERS, 2012, 7 :1-10

[49] Transport Study of the Proximity Effect of a Thin Superconducting Film on a Topological Insulator Bi1.08Sn0.02Sb0.9Te2S [J].

Sakhin, V. O. ;

Kukovitsky, E. F. ;

Lyadov, N. M. ;

Garif'yanov, N. N. ;

Kamashev, A. A. ;

Talanov, Yu. I. .

JOURNAL OF SURFACE INVESTIGATION, 2024, 18 (06) :1690-1694

[50] Effect of the hexagonal warping on the dynamical conductivity of surface states in a topological insulator [J].

Chen, Qinjun ;

Yang, Ye ;

Zhang, Chao .

EUROPEAN PHYSICAL JOURNAL B, 2018, 91 (07)

← 1 2 3 4 5 →