Quasiparticle Spectrum of Vortices in Cuprates

Details Quasiparticle Spectrum of Vortices in Cuprates Quasiparticle Spectrum of Vortices in Cuprates

1998-12-08

arxiv.org/abs/cond-mat/9812129v1

Physics

Condensed Matter

Superconductivity

8 pages, Latex, uses spie1.sty, 6 eps figures, published in SPIE Proceedings, Vol. 3481 (SPIE, Bellingham, 1998), p. 106-113

Scientific paper

The quasiparticle excitation spectrum of an isolated vortex in a clean layered d-wave superconductor is calculated, using both the Bogoliubov--de Gennes and the quasiclassical Eilenberger equations. Analytical solutions are obtained within the model of step-variation of the gap function, adjusting the Caroli, de Gennes and Matricon approach for low-lying excitations in cuprates. A large peak in the density of states in the "pancake" vortex core is found, caused by the two-dimensional and strong coupling nature of high-temperature superconductivity.

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