Detecting Majorana bound states

被引:49
作者
Benjamin, Colin [1 ]
Pachos, Jiannis K. [1 ]
机构
[1] Univ Leeds, Sch Phys & Astron, Quantum Informat Grp, Leeds LS2 9JT, W Yorkshire, England
来源
PHYSICAL REVIEW B | 2010年 / 81卷 / 08期
基金
英国工程与自然科学研究理事会;
关键词
TOPOLOGICAL QUANTUM COMPUTATION; AHARONOV-BOHM; RINGS; OSCILLATIONS; ANYONS;
D O I
10.1103/PhysRevB.81.085101
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We propose a set of interferometric methods on how to detect Majorana bound states induced by a topological insulator. The existence of these states can be easily determined by the conductance oscillations as function of magnetic flux and/or electric voltage. We study the system in the presence and absence of Majorana bound states and observe strikingly different behaviors. Importantly, we show that the presence of coupled Majorana bound states can induce a persistent current in absence of any external magnetic field.
引用
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页数:5
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共 34 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]  
ALICEA J, ARXIV09122115, P26808
[3]   Current magnification effect in mesoscopic systems at equilibrium [J].
Benjamin, C ;
Jayannavar, AM .
PHYSICAL REVIEW B, 2001, 64 (23)
[4]  
BENJAMIN C, UNPUB
[5]   Near-zero modes in condensate phases of the Dirac theory on the honeycomb lattice [J].
Bergman, Doron L. ;
Le Hur, Karyn .
PHYSICAL REVIEW B, 2009, 79 (18)
[6]   Observing Majorana bound states in p-wave superconductors using noise measurements in tunneling experiments [J].
Bolech, C. J. ;
Demler, Eugene .
PHYSICAL REVIEW LETTERS, 2007, 98 (23)
[7]   Non-locality of non-Abelian anyons [J].
Brennen, G. K. ;
Iblisdir, S. ;
Pachos, J. K. ;
Slingerland, J. K. .
NEW JOURNAL OF PHYSICS, 2009, 11
[8]   Edge-State Physics Without Magnetic Fields [J].
Buettiker, Markus .
SCIENCE, 2009, 325 (5938) :278-279
[9]   JOSEPHSON BEHAVIOR IN SMALL NORMAL ONE-DIMENSIONAL RINGS [J].
BUTTIKER, M ;
IMRY, Y ;
LANDAUER, R .
PHYSICS LETTERS A, 1983, 96 (07) :365-367
[10]   SMALL NORMAL-METAL LOOP COUPLED TO AN ELECTRON RESERVOIR [J].
BUTTIKER, M .
PHYSICAL REVIEW B, 1985, 32 (03) :1846-1849