First-order vortex unbinding transition in thin superconducting films

Journal Article · Thu Aug 01 04:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.3051· OSTI ID:286664

Irz, D Y ^[1]; Ryzhov, V N; Tareyeva, E E ^[2]

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1. Physical Department, Moscow State University, 119899, Moscow (Russia)
2. Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk 142092, Moscow region (Russia)

The vortex unbinding transition in thin superconducting films is discussed within the cycle approximation, taking into account a vortex core shape. It is shown that for large core energies the universal Kosterlitz-Thouless-like behavior takes place in the vicinity of the characteristic transition temperature {ital T}{sub KT}, while for low core energies the vortex-antivortex pair unbinding occurs through a first-order transition. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 286664
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 5 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
FREE ENTHALPY
INTERACTIONS
KOSTERLITZ-THOULESS THEORY
MAGNETIC FLUX
PHASE TRANSFORMATIONS
SUPERCONDUCTING FILMS
TRANSITION TEMPERATURE