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Self-consistent electronic structure of a $d_{x^2-y^2}$ and a $d_{x^2-y^2}+id_{xy}$ vortex | | M. Franz
; Z. Tev{s}anovi’c
; | | Date: |
23 Oct 1997 | | Journal: | PRL 80, 4763 (1998). DOI: 10.1103/PhysRevLett.80.4763 | | Subject: | Superconductivity | cond-mat.supr-con | | Affiliation: | Johns Hopkins | | Abstract: | We investigate quasiparticle states associated with an isolated vortex in a d-wave superconductor using a self-consistent Bogoliubov-de Gennes formalism. For a pure $d_{x^2-y^2}$ superconductor we find that there exist no bound states in the core; all the states are extended with continuous energy spectrum. This result is inconsistent with the existing experimental data on cuprates. We propose an explanation for this data in terms of a magnetic-field-induced $d_{x^2-y^2}+id_{xy}$ state recently invoked in connection with the thermal conductivity measurements on Bi$_2$Sr$_2$CaCu$_2$O$_8$. | | Source: | arXiv, cond-mat/9710258 | | Services: | Forum | Review | PDF | Favorites | |
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