Vortex matter in mesoscopic superconductors

This article examines the vortex matter of mesoscopic superconductors with numerous vortex states that do not exist in bulk superconductors. Using scanning tunneling microscopy/spectroscopy, it investigates the organization of vortex cores at different levels of confinement. The article begins with a discussion of the basic properties of quantum vortices in superconductors and experimental requirements for studying vortex confinement phenomena. It then considers the effect of sample size and shape on vortex distribution and pinning, along with the resulting ultra-dense configurations that cannot be achieved in bulk superconductors. It also describes the peculiar features of vortices in atomically thin superconductors having mixed Abrikosov–Josephson vortices.

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High-energy quasiparticle injection into mesoscopic superconductors

Nature Nanotechnology ◽

10.1038/s41565-020-00834-8 ◽

2021 ◽

Author(s):

Loren D. Alegria ◽

Charlotte G. L. Bøttcher ◽

Andrew K. Saydjari ◽

Andrew T. Pierce ◽

Seung Hwan Lee ◽

...

Keyword(s):

High Energy ◽

Mesoscopic Superconductors

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Vortex Matter in Heterothermal Superconducting Loops

Journal of Superconductivity and Novel Magnetism ◽

10.1007/s10948-021-05817-x ◽

2021 ◽

Author(s):

C. A. Aguirre ◽

T. Nunez ◽

J. Barba-Ortega

Keyword(s):

Vortex Matter

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Vortex configurations and metastability in mesoscopic superconductors

Physica C Superconductivity ◽

10.1016/j.physc.2003.11.060 ◽

2004 ◽

Vol 404 (1-4) ◽

pp. 11-17 ◽

Cited By ~ 10

Author(s):

Clécio C. de Souza Silva ◽

Leonardo R.E. Cabral ◽

J. Albino Aguiar

Keyword(s):

Mesoscopic Superconductors

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Geometric effect on the vortex configuration and motion in mesoscopic superconducting cylinders

International Journal of Modern Physics B ◽

10.1142/s0217979215500095 ◽

2015 ◽

Vol 29 (03) ◽

pp. 1550009 ◽

Cited By ~ 1

Author(s):

Shan-Shan Wang ◽

Guo-Qiao Zha

Keyword(s):

Phase Transitions ◽

Vortex Dynamics ◽

Axial Symmetry ◽

Time Dependent ◽

Vortex Matter ◽

Ginzburg Landau ◽

Geometric Effect ◽

Multiply Connected ◽

Vortex States ◽

Ginzburg Landau Equations

Based on the time-dependent Ginzburg–Landau equations, we study numerically the vortex configuration and motion in mesoscopic superconducting cylinders. We find that the effects of the geometric symmetry of the system and the noncircular multiply-connected boundaries can significantly influence the steady vortex states and the vortex matter moving. For the square cylindrical loops, the vortices can enter the superconducting region in multiples of 2 and the vortex configuration exhibits the axial symmetry along the square diagonal. Moreover, the vortex dynamics behavior exhibits more complications due to the existed centered hole, which can lead to the vortex entering from different edges and exiting into the hole at the phase transitions.

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