Vortex states in layered mesoscopic superconductors

Chao Yu Liu, Golibjon Berdiyorov, M. V. Milošević

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Within the Ginzburg-Landau theory, we study the vortex structures in three-dimensional anisotropic mesoscopic superconductors in the presence of a uniform magnetic field. Anisotropy is included through varied Tc in different layers of the sample and leads to distinct differences in the vortex states and their free energy. Several unconventional states are found, some comprising vortex clusters or exhibiting asymmetry. In a tilted magnetic field, we found second-order transitions between different vortex states, although vortex entry is generally a first-order transition in mesoscopic samples. In multilayered samples the kinked vortex strings are formed owing to the competing interactions of vortices with Meissner currents and the weak-link boundaries. The length and deformation of vortex fragments are determined solely by the inclination and strength of applied magnetic field, and this lock-in does not depend on the degree of anisotropy between the superconducting layers.

Original languageEnglish
Article number104524
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number10
DOIs
Publication statusPublished - 31 Mar 2011
Externally publishedYes

Fingerprint

Superconducting materials
Vortex flow
vortices
Magnetic fields
Anisotropy
magnetic fields
anisotropy
entry
Free energy
inclination
strings
free energy
fragments
asymmetry

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Vortex states in layered mesoscopic superconductors. / Liu, Chao Yu; Berdiyorov, Golibjon; Milošević, M. V.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 83, No. 10, 104524, 31.03.2011.

Research output: Contribution to journalArticle

@article{c5e1054c6c7f48ce98715eb771be4c63,
title = "Vortex states in layered mesoscopic superconductors",
abstract = "Within the Ginzburg-Landau theory, we study the vortex structures in three-dimensional anisotropic mesoscopic superconductors in the presence of a uniform magnetic field. Anisotropy is included through varied Tc in different layers of the sample and leads to distinct differences in the vortex states and their free energy. Several unconventional states are found, some comprising vortex clusters or exhibiting asymmetry. In a tilted magnetic field, we found second-order transitions between different vortex states, although vortex entry is generally a first-order transition in mesoscopic samples. In multilayered samples the kinked vortex strings are formed owing to the competing interactions of vortices with Meissner currents and the weak-link boundaries. The length and deformation of vortex fragments are determined solely by the inclination and strength of applied magnetic field, and this lock-in does not depend on the degree of anisotropy between the superconducting layers.",
author = "Liu, {Chao Yu} and Golibjon Berdiyorov and Milošević, {M. V.}",
year = "2011",
month = "3",
day = "31",
doi = "10.1103/PhysRevB.83.104524",
language = "English",
volume = "83",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Institute of Physics Publising LLC",
number = "10",

}

TY - JOUR

T1 - Vortex states in layered mesoscopic superconductors

AU - Liu, Chao Yu

AU - Berdiyorov, Golibjon

AU - Milošević, M. V.

PY - 2011/3/31

Y1 - 2011/3/31

N2 - Within the Ginzburg-Landau theory, we study the vortex structures in three-dimensional anisotropic mesoscopic superconductors in the presence of a uniform magnetic field. Anisotropy is included through varied Tc in different layers of the sample and leads to distinct differences in the vortex states and their free energy. Several unconventional states are found, some comprising vortex clusters or exhibiting asymmetry. In a tilted magnetic field, we found second-order transitions between different vortex states, although vortex entry is generally a first-order transition in mesoscopic samples. In multilayered samples the kinked vortex strings are formed owing to the competing interactions of vortices with Meissner currents and the weak-link boundaries. The length and deformation of vortex fragments are determined solely by the inclination and strength of applied magnetic field, and this lock-in does not depend on the degree of anisotropy between the superconducting layers.

AB - Within the Ginzburg-Landau theory, we study the vortex structures in three-dimensional anisotropic mesoscopic superconductors in the presence of a uniform magnetic field. Anisotropy is included through varied Tc in different layers of the sample and leads to distinct differences in the vortex states and their free energy. Several unconventional states are found, some comprising vortex clusters or exhibiting asymmetry. In a tilted magnetic field, we found second-order transitions between different vortex states, although vortex entry is generally a first-order transition in mesoscopic samples. In multilayered samples the kinked vortex strings are formed owing to the competing interactions of vortices with Meissner currents and the weak-link boundaries. The length and deformation of vortex fragments are determined solely by the inclination and strength of applied magnetic field, and this lock-in does not depend on the degree of anisotropy between the superconducting layers.

UR - http://www.scopus.com/inward/record.url?scp=79961094540&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79961094540&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.83.104524

DO - 10.1103/PhysRevB.83.104524

M3 - Article

VL - 83

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 10

M1 - 104524

ER -