How to detect gap nodes of a superconductor by angle-resolved specific heat experiment?

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The specific heat oscillation in the mixed state of type II superconductors is studied theoretically when rotating field within a plane containing gap minimum and maximum. The calculations are performed microscopically by solving quasi-classical Eilenberger equation for vortex lattices. The field dependence of the oscillation amplitude can discriminate between the nodal and anisotropic gap with a finite minimum and the oscillation phase gives the gap minimum position on the Fermi surface. These also provide a way to separate out the anisotropic behavior due to the Fermi velocity.
6 pages, 4 figures

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Superconductivity

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http://salesiana.dossiersoluciones.com/handle/123456789/24865

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0409371
 http://arxiv.org/abs/cond-mat/0409371

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arXiv