Spin-orbit coupling and anomalous Josephson effect in nanowires

被引：74

作者：

Campagnano, G. ^{[1
,2
]}

Lucignano, P. ^{[1
,2
]}

Giuliano, D. ^{[2
,3
,4
]}

Tagliacozzo, A. ^{[1
,2
,5
]}

机构：

[1] Univ Naples Federico II, Dipartimento Fis, I-80126 Naples, Italy

[2] CNR SPIN, I-80126 Naples, Italy

[3] Univ Calabria, Dipartimento Fis, I-87036 Cosenza, Italy

[4] Ist Nazl Fis Nucl, Grp Collegato Cosenza Arcavacata Rende, I-87036 Cosenza, Italy

[5] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2015年 / 27卷 / 20期

关键词：

Josephson effect; spin-orbit coupling; semiconducting nanowires; UNCONVENTIONAL SUPERCONDUCTORS; SYMMETRY-BREAKING; QUANTUM; PHASE; SUPERCURRENT; JUNCTIONS; FERMIONS; REVERSAL; DEVICES; STATES;

D O I：

10.1088/0953-8984/27/20/205301

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A superconductor-semiconducting nanowire-superconductor heterostructure in the presence of spin-orbit coupling and magnetic field can support a supercurrent even in the absence of phase difference between the superconducting electrodes. We investigate this phenomenon-the anomalous Josephson effect-employing a model capable of describing many bands in the normal region. We discuss the geometrical and symmetry conditions required to have a finite anomalous supercurrent, and in particular we show that this phenomenon is enhanced when the Fermi level is located close to a band opening in the normal region.

引用

页数：7

共 50 条

[1] New directions in the pursuit of Majorana fermions in solid state systems [J].

Alicea, Jason .

REPORTS ON PROGRESS IN PHYSICS, 2012, 75 (07)

[2]

[Anonymous], 1992, Transport Phenomena in Mesoscopic Systems

[3] Josephson current in s-wave-superconductor/Sr2RuO4 junctions [J].

Asano, Y ;

Tanaka, Y ;

Sigrist, M ;

Kashiwaya, S .

PHYSICAL REVIEW B, 2003, 67 (18)

[4] Odd-frequency pairs and Josephson current through a strong ferromagnet [J].

Asano, Yasuhiro ;

Sawa, Yuki ;

Tanaka, Yukio ;

Golubov, Alexander A. .

PHYSICAL REVIEW B, 2007, 76 (22)

[5] Quantum Spintronics: Engineering and Manipulating Atom-Like Spins in Semiconductors [J].

Awschalom, David D. ;

Bassett, Lee C. ;

Dzurak, Andrew S. ;

Hu, Evelyn L. ;

Petta, Jason R. .

SCIENCE, 2013, 339 (6124) :1174-1179

[6] UNIVERSAL LIMIT OF CRITICAL-CURRENT FLUCTUATIONS IN MESOSCOPIC JOSEPHSON-JUNCTIONS [J].

BEENAKKER, CWJ .

PHYSICAL REVIEW LETTERS, 1991, 67 (27) :3836-3839

[7] Quantum spin Hall effect and topological phase transition in HgTe quantum wells [J].

Bernevig, B. Andrei ;

Hughes, Taylor L. ;

Zhang, Shou-Cheng .

SCIENCE, 2006, 314 (5806) :1757-1761

[8] Quantitative Determination of the Band Gap of WS2 with Ambipolar Ionic Liquid-Gated Transistors [J].

Braga, Daniele ;

Lezama, Ignacio Gutierrez ;

Berger, Helmuth ;

Morpurgo, Alberto F. .

NANO LETTERS, 2012, 12 (10) :5218-5223

[9] Fully developed triplet proximity effect [J].

Braude, V. ;

Nazarov, Yu. V. .

PHYSICAL REVIEW LETTERS, 2007, 98 (07)

[10] Anomalous Josephson current, incipient time-reversal symmetry breaking, and Majorana bound states in interacting multilevel dots [J].

Brunetti, Aldo ;

Zazunov, Alex ;

Kundu, Arijit ;

Egger, Reinhold .

PHYSICAL REVIEW B, 2013, 88 (14)

← 1 2 3 4 5 →