Majorana edge states and topological properties in 1D/2D Rashba semiconductor proximity coupled to iron-based superconductor

被引：3

作者：

Ebisu, Hiromi ^{[1
]}

Yada, Keiji ^{[2
]}

Kasai, Hideaki ^{[1
,3
]}

Tanaka, Yukio ^{[2
]}

机构：

[1] Osaka Univ, Dept Appl Phys, Suita, Osaka 5650871, Japan

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

[3] Osaka Univ, Ctr Atom & Mol Technol, Suita, Osaka 5650871, Japan

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2015年 / 28卷 / 01期

关键词：

topological superconductor; iron-based superconductor; mirror reflection symmetry; NON-ABELIAN ANYONS; TUNNELING SPECTROSCOPY; NANOWIRE; FERMIONS; CONDUCTANCE; SIGNATURE; WAVE;

D O I：

10.1088/0953-2048/28/1/014001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We study Majorana edge states and their topological properties in one-dimensional (1D) and two-dimensional (2D) Rashba semiconductors deposited on iron-based superconductors under the applied Zeeman field for various directions. Using the recursive Green's function method, we calculate the local density of states (LDOS) both for s(+/-) and s(++)-wave pairings. We elucidate that it shows anisotropic response to the applied Zeeman field specific to Majorana edge states. This anisotropy can be understood by the winding number, which shows whether the present system is topological or not. The resulting LDOS and winding numbers for s(+/-) and s(++)-wave pairings are significantly different at the lower Zeeman field. These results serve as a guide to determine the pairing symmetry of iron-pnictide.

引用

页数：11

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