Anomalous features of the proximity effect in triplet superconductors

Details Anomalous features of the proximity effect in triplet superconductors Anomalous features of the proximity effect in triplet superconductors

2005-08-18

arxiv.org/abs/cond-mat/0508408v1

Physics

Condensed Matter

Superconductivity

5 pages

Scientific paper

Anomalous features of the proximity effect specific to diffusive normal metal / triplet superconductor (DN/TS) junctions are studied within the quasiclassical Green's function formalism. The pair amplitude $f_{N}$ as a function of energy $\epsilon$ in DN, satisfies an anomalous relation, $% f_{N}(\epsilon)=-f^{*}_{N}(-\epsilon)$, contrary to that in singlet superconductor junctions case where $f_{N}(\epsilon)=f^{*}_{N}(-% \epsilon)$. Such an unusual $\epsilon$ dependence is responsible for a zero energy peak in the local density of states and is a source of an anomalous penetration of the applied magnetic field into DN. % Our results are relevant to Sr$_{2}$RuO$_{4}$, which is considered to have a $p_{x}+ip_{y}$-wave symmetry.

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