Majorana fermion chain at the quantum spin Hall edge

被引：52

作者：

Shivamoggi, V. ^{[1
]}

Refael, G. ^{[2
]}

Moore, J. E. ^{[1
,3
]}

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] CALTECH, Dept Phys, Pasadena, CA 91125 USA

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 04期

关键词：

INSULATOR; WELLS; PHASE;

D O I：

10.1103/PhysRevB.82.041405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study a realization of a 1D chain of Majorana bound states at the interfaces between alternating ferromagnetic and superconducting regions at a quantum spin Hall insulator edge. In the limit of well-separated Majoranas, the system can be mapped to the transverse field Ising model. The disordered critical point can be reached by tuning the relative magnitude or phases of the ferromagnetic and superconducting order parameters. We compute the voltage dependence of the tunneling current from a metallic tip into the Majorana chain as a direct probe of the random critical state.

引用

页数：4

共 27 条

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