VORTEX LATTICE IN A HIGH-Tc SUPERCONDUCTOR OF MIXED PAIRING SYMMETRY | Zendy

QU HAI | Zendy; ShiPing Zhou | Zendy

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VORTEX LATTICE IN A HIGH-Tc SUPERCONDUCTOR OF MIXED PAIRING SYMMETRY

Author(s) -

QU HAI,

ShiPing Zhou

Publication year - 1999

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.48.352

Subject(s) - pairing , condensed matter physics , physics , vortex , tetragonal crystal system , superconductivity , lattice (music) , anisotropy , hexagonal lattice , type ii superconductor , antiferromagnetism , quantum mechanics , thermodynamics , phase (matter) , acoustics

Starting from a tight binding description,the existence of mixed s-dwave pairing state is discussed. Then,within the framework of the phenomenological G-L theory, the structure of vortex lattice in a high-Tc superconductor is studied.It is shown that there is a strong correlation between the structure of a single vortex and the shape of the vortex lattice.At low temperatures,with the existence of s-wave component and its coupling to d-wave component,the d-wave order parameter and the local magnetic field show tetragonal anisotropy,and the structure of vortex lattice is oblique;however,when the temperature is close to Tc, it may become triangular.

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