Majorana Fermion Induced Resonant Andreev Reflection

被引：790

作者：

Law, K. T. ^{[1
,2
]}

Lee, Patrick A. ^{[2
]}

Ng, T. K. ^{[3
]}

机构：

[1] Hong Kong Univ Sci & Technol, Inst Adv Study, Hong Kong, Hong Kong, Peoples R China

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

[3] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 23期

基金：

美国国家科学基金会;

关键词：

SINGLE DIRAC CONE; QUANTUM COMPUTATION; INSULATOR; SURFACE; ANYONS;

D O I：

10.1103/PhysRevLett.103.237001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We describe experimental signatures of Majorana fermion edge states, which form at the interface between a superconductor and the surface of a topological insulator. If a lead couples to the Majorana fermions through electron tunneling, the Majorana fermions induce resonant Andreev reflections from the lead to the grounded superconductor. The linear tunneling conductance is 0 (2e(2)/h) if there is an even (odd) number of vortices in the superconductor. Similar resonance occurs for tunneling into the zero mode in the vortex core. We also study the current and noise of a two-lead device.

引用

页数：4

共 18 条

[1] Electrically Detected Interferometry of Majorana Fermions in a Topological Insulator [J].

Akhmerov, A. R. ;

Nilsson, Johan ;

Beenakker, C. W. J. .

PHYSICAL REVIEW LETTERS, 2009, 102 (21)

[2] Geometrical enhancement of the proximity effect in quantum wires with extended superconducting tunnel contacts [J].

Fagas, G ;

Tkachov, G ;

Pfund, A ;

Richter, K .

PHYSICAL REVIEW B, 2005, 71 (22)

[3] Topological insulators in three dimensions [J].

Fu, Liang ;

Kane, C. L. ;

Mele, E. J. .

PHYSICAL REVIEW LETTERS, 2007, 98 (10)

[4] Topological insulators with inversion symmetry [J].

Fu, Liang ;

Kane, C. L. .

PHYSICAL REVIEW B, 2007, 76 (04)

[5] Superconducting proximity effect and Majorana fermions at the surface of a topological insulator [J].

Fu, Liang ;

Kane, C. L. .

PHYSICAL REVIEW LETTERS, 2008, 100 (09)

[6] Probing Neutral Majorana Fermion Edge Modes with Charge Transport [J].

Fu, Liang ;

Kane, C. L. .

PHYSICAL REVIEW LETTERS, 2009, 102 (21)

[7] Quantum phase transitions across a p-wave Feshbach resonance -: art. no. 230403 [J].

Gurarie, V ;

Radzihovsky, L ;

Andreev, AV .

PHYSICAL REVIEW LETTERS, 2005, 94 (23)

[8] A topological Dirac insulator in a quantum spin Hall phase [J].

Hsieh, D. ;

Qian, D. ;

Wray, L. ;

Xia, Y. ;

Hor, Y. S. ;

Cava, R. J. ;

Hasan, M. Z. .

NATURE, 2008, 452 (7190) :970-U5

[9] Fault-tolerant quantum computation by anyons [J].

Kitaev, AY .

ANNALS OF PHYSICS, 2003, 303 (01) :2-30

[10] NONABELIONS IN THE FRACTIONAL QUANTUM HALL-EFFECT [J].

MOORE, G ;

READ, N .

NUCLEAR PHYSICS B, 1991, 360 (2-3) :362-396

← 1 2 →