Quantum interference phenomena between impurity states in d-wave superconductors |
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| Authors: | U. Michelucci F. VenturiniA.P. Kampf |
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| Affiliation: | a Theoretische Physik III, Elektronische Korrelationen und Magnetismus, Institut für Physik, Universität Augsburg, 86135 Augsburg, Germany
b Walther Meissner Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany |
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| Abstract: | We investigate the mutual influence of impurities in two-dimensional d-wave superconductors involving self-consistent solutions of the Bogoliubov-de Gennes equations. The local order parameter suppression, the local density of states as well as the interference of impurity-induced structures are analyzed. We employ an impurity position averaging scheme for the density of states that does not neglect these interference effects, as the commonly used T-matrix approaches do. |
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| Keywords: | A. Superconductors D. Electronic structure |
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