Superconductivity-induced Anderson localization

Katsanos, D. E. and Evangelou, S. N. and Lambert, C. J. (1998) Superconductivity-induced Anderson localization. Physical review B, 58 (5). pp. 2442-2444. ISSN 0163-1829

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We have studied the effect of a random superconducting order parameter on the localization of quasiparticles, by numerical finite-size scaling of the Bogoliubov-de Gennes tight-binding Hamiltonian. Anderson localization is obtained in d = 2 and a mobility edge where the states localize is observed in d = 3. The critical behavior and localization exponent are universal within error bars both for real and complex random order parameter. Experimentally these results imply a suppression of thr electronic contribution to thermal transport from states above the bulk energy gap.

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Journal Article
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Physical review B
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23 Oct 2012 12:16
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21 Nov 2022 22:51