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Kosterlitz-Thouless Behavior in Layered Superconductors: The Role of the Vortex Core Energy

Contributors

Benfatto, L.; Castellani, C.; Giamarchi, Thierry

Published in

Physical review letters, vol. 98, no. 11

Publication date

2007

Abstract

In layered superconductors (SC) with small interlayer Josephson coupling vortex-antivortex phase fluctuations characteristic of quasi two-dimensional (2D) Kosterlitz-Thouless behavior are expected to be observable at some energy scale Td. While in the 2D case Td is uniquely identified by the KT temperature TKT where the universal value of the superfluid density is reached, we show that in a generic anisotropic 3D system Td is controlled by the vortex-core energy, and can be significantly larger than the 2D scale TKT. These results are discussed in relation to recent experiments in cuprates, which represent a typical experimental realization of layered anisotropic SC.

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

BENFATTO, L., CASTELLANI, C., GIAMARCHI, Thierry. Kosterlitz-Thouless Behavior in Layered Superconductors: The Role of the Vortex Core Energy. In: Physical review letters, 2007, vol. 98, n° 11. doi: 10.1103/PhysRevLett.98.117008

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Article (Published version)

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Journal ISSN

0031-9007
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Technical informations

Creation

28/04/2014 15:43:00

First validation

28/04/2014 15:43:00

Update

14/03/2023 21:09:55

Status update

14/03/2023 21:09:55

Last indexation

30/10/2024 17:00:13
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