Quasiparticle States Around a Half-quantum Vortex in a Chiral p-wave Superconducting State

S. Kikuchi; Y. Kikuchi; T. Yoshioka; H. Tsuchiura; M. Sigrist

doi:10.1016/j.phpro.2015.05.137

Quasiparticle States Around a Half-quantum Vortex in a Chiral p-wave Superconducting State

S. Kikuchi, Y. Kikuchi, T. Yoshioka, H. Tsuchiura, M. Sigrist

ENG - Applied Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

We study the quasiparticle states around a half-quantum vortex core in chiral p-wave superconducting state using a square lattice single band model based on the Bogoliubov-de Gennes theory. Three pronounced peaks are found in the local density of states around the core, including the zero-energy peak corresponding to the Majorana state. We also study the quasiparticle states around a nonmagnetic impurity, and find almost the same peak structure except for the absence of the Majorara peak.

Original language	English
Pages (from-to)	93-96
Number of pages	4
Journal	Physics Procedia
Volume	65
DOIs	https://doi.org/10.1016/j.phpro.2015.05.137
Publication status	Published - 2015
Event	27th International Symposium on Superconductivity, ISS 2014 - Tokyo, Japan Duration: 2014 Nov 25 → 2014 Nov 27

Keywords

Bogoliubov-de Gennes theory
Majorana states
chiral p-wave superconducting state
half-quantum vortex

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10.1016/j.phpro.2015.05.137

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title = "Quasiparticle States Around a Half-quantum Vortex in a Chiral p-wave Superconducting State",

abstract = "We study the quasiparticle states around a half-quantum vortex core in chiral p-wave superconducting state using a square lattice single band model based on the Bogoliubov-de Gennes theory. Three pronounced peaks are found in the local density of states around the core, including the zero-energy peak corresponding to the Majorana state. We also study the quasiparticle states around a nonmagnetic impurity, and find almost the same peak structure except for the absence of the Majorara peak.",

keywords = "Bogoliubov-de Gennes theory, Majorana states, chiral p-wave superconducting state, half-quantum vortex",

author = "S. Kikuchi and Y. Kikuchi and T. Yoshioka and H. Tsuchiura and M. Sigrist",

note = "Funding Information: The authors thank S. Kashiwaya for helpful discussion. A part of the numerical computations were carried out at the Cyber-science Center, Tohoku University. This work was partly supported by JSPS KAKENHI Grant Number 25287104. Publisher Copyright: {\textcopyright} 2015 The Authors.; 27th International Symposium on Superconductivity, ISS 2014 ; Conference date: 25-11-2014 Through 27-11-2014",

year = "2015",

doi = "10.1016/j.phpro.2015.05.137",

language = "English",

volume = "65",

pages = "93--96",

journal = "Physics Procedia",

issn = "1875-3884",

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TY - JOUR

T1 - Quasiparticle States Around a Half-quantum Vortex in a Chiral p-wave Superconducting State

AU - Kikuchi, S.

AU - Kikuchi, Y.

AU - Yoshioka, T.

AU - Tsuchiura, H.

AU - Sigrist, M.

N1 - Funding Information: The authors thank S. Kashiwaya for helpful discussion. A part of the numerical computations were carried out at the Cyber-science Center, Tohoku University. This work was partly supported by JSPS KAKENHI Grant Number 25287104. Publisher Copyright: © 2015 The Authors.

PY - 2015

Y1 - 2015

N2 - We study the quasiparticle states around a half-quantum vortex core in chiral p-wave superconducting state using a square lattice single band model based on the Bogoliubov-de Gennes theory. Three pronounced peaks are found in the local density of states around the core, including the zero-energy peak corresponding to the Majorana state. We also study the quasiparticle states around a nonmagnetic impurity, and find almost the same peak structure except for the absence of the Majorara peak.

AB - We study the quasiparticle states around a half-quantum vortex core in chiral p-wave superconducting state using a square lattice single band model based on the Bogoliubov-de Gennes theory. Three pronounced peaks are found in the local density of states around the core, including the zero-energy peak corresponding to the Majorana state. We also study the quasiparticle states around a nonmagnetic impurity, and find almost the same peak structure except for the absence of the Majorara peak.

KW - Bogoliubov-de Gennes theory

KW - Majorana states

KW - chiral p-wave superconducting state

KW - half-quantum vortex

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U2 - 10.1016/j.phpro.2015.05.137

DO - 10.1016/j.phpro.2015.05.137

M3 - Conference article

AN - SCOPUS:84948442282

SN - 1875-3884

VL - 65

SP - 93

EP - 96

JO - Physics Procedia

JF - Physics Procedia

T2 - 27th International Symposium on Superconductivity, ISS 2014

Y2 - 25 November 2014 through 27 November 2014

ER -

Quasiparticle States Around a Half-quantum Vortex in a Chiral p-wave Superconducting State

Abstract

Keywords

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