P Miranović et al 2005 J. Phys.: Condens. Matter 17 7971 doi:10.1088/0953-8984/17/50/015
P Miranović1, M Ichioka2, K Machida2 and N Nakai3
Show affiliationsThe specific heat oscillation in the mixed state of type II superconductors is studied theoretically when rotating a field within a plane containing a gap minimum and maximum. The calculations are performed microscopically by solving the 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 behaviour due to the Fermi velocity.
74.25.Bt Thermodynamic properties
74.70.-b Superconducting materials
74.25.Qt Vortex lattices, flux pinning, flux creep
Issue 50 (21 December 2005)
Received 11 July 2005, in final form 30 September 2005
Published 2 December 2005
P Miranović et al 2005 J. Phys.: Condens. Matter 17 7971
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