Regensburg 2002 – wissenschaftliches Programm
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TT: Tiefe Temperaturen
TT 10: Supraleitung: Theorie
TT 10.8: Vortrag
Dienstag, 12. März 2002, 12:00–12:15, H18
Low energy behaviour of quasiparticles in superconductors with p-wave symmetry — •Corinna Kollath1,2 and Martin R. Zirnbauer1 — 1Institut für Theoretische Physik, Universität zu Köln — 2Sektion Physik, LMU München
We investigate a model for quasiparticles in a gapped disordered superconductor with p-wave symmetry. In such a superconductor two topologically distinct phases exist [1]. The low energy density of states of the quasiparticles close to a domain wall between these two phases is investigated by field theoretical methods, in the random matrix limit. A model for the quasiparticles in a vortex can be gained by considering a circular domain wall [2]. In particular we are interested in the existence of a zero energy state which was found by quasiclassical considerations in the vortex of a clean p-wave superconductor [2,3].
[1] G.E. Volovik 1988 Sov. Phys. JETP 67 1804
[2] N. Read and D. Green 2000 Phys.Rev. B61 10267
[3] G.E. Volovik 1999 JETP Lett. 70 609-614