Anisotropic Ginzburg-Landau theory for arbitrary induction and vortex lattice symmetry: Effects ofa−bplane mass anisotropy on the properties of high-temperature superconductors

2005 ◽  
Vol 71 (22) ◽  
Author(s):  
Archana Achalere ◽  
B. Dey
Keyword(s):  
High Temperature ◽  
Vortex Lattice ◽  
Landau Theory ◽  
High Temperature Superconductors ◽  
Ginzburg Landau ◽  
Lattice Symmetry

Vortex Lattice Structure of High Temperature Superconductors

2003 ◽  
Vol 17 (18n20) ◽  
pp. 3415-3422
Author(s):  
Shi-Ping Zhou ◽  
Hao-Chen Du ◽  
Hong-Yin Liao
Keyword(s):  
High Temperature ◽  
Transition Temperature ◽  
Critical Field ◽  
Vortex Lattice ◽  
Lattice Structure ◽  
High Temperature Superconductors ◽  
Upper Critical Field ◽  
Ginzburg Landau ◽  
Landau Model ◽  
Upward Curvature

We study vortex lattice structure of high temperature superconductors by using the Ginzburg–Landau model. The structure of the vortex lattice is oblique at the temperatures well below the transition temperature Tc, where the mixed s–d state is expected to have the lowest energy. Whereas, very close to Tc, the dx2-y2 wave is slightly lower in energy, and a triangular vortex lattice recovers. The coexistence and the coupling between the s- and d-waves account for the upward curvature of the upper critical field curve HC2(T).

Singular and Nonsingular Vortex Structures in High-Temperature Superconductors

2003 ◽  
Vol 17 (10n12) ◽  
pp. 621-626
Author(s):  
A. S. Bystrov ◽  
A. S. Mel'Nikov ◽  
D. A. Ryzhov ◽  
I. M. Nefedov ◽  
I. A. Shereshevskii ◽  
...  
Keyword(s):  
High Temperature ◽  
Vortex Core ◽  
Landau Theory ◽  
High Temperature Superconductors ◽  
Flux Line ◽  
Vortex Structures ◽  
Time Dependent ◽  
S Wave ◽  
Ginzburg Landau ◽  
Flux Lines

In this paper we focus on the comparison of the equilibrium and transport properties of singular and nonsingular vortex structures in high-temperature compounds. Using the time-dependent Ginzburg–Landau theory we study the dynamics of vortex structures in superconductors with (d+s)-wave pairing. We calculate the angular dependent correction to the viscosity tensor of a singular flux line, which appears due to the admixture of subdominant s-wave order parameter component in the vortex core. The second order phase transition between singular and nonsingular vortices in high-temperature superconductors was simulated within the time-dependent Ginzburg-Landau equations. The semiclassical analysis of the positions of gap nodes in the vortex core is performed both for singular and nonsingular flux lines.

Ginzburg-Landau-Gorkov theory for high-temperature superconductors

1989 ◽  
Vol 40 (10) ◽  
pp. 6878-6883 ◽  
Author(s):  
L. Tewordt ◽  
S. Wermbter ◽  
Th. Wölkhausen
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors ◽  
Ginzburg Landau
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