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Superconductivity-induced Anderson localization

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<mark>Journal publication date</mark>1/08/1998
<mark>Journal</mark>Physical Review B
Issue number5
Number of pages3
Pages (from-to)2442-2444
<mark>Original language</mark>English


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.