Anomalous features of the proximity effect in triplet superconductors


Tanaka, Y. and Asano, Y. and Golubov, A.A. and Kashiwaya, S. (2005) Anomalous features of the proximity effect in triplet superconductors. Physical Review B: Condensed matter and materials physics, 72 (14). p. 140503. ISSN 1098-0121

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Abstract:Anomalous features of the proximity effect specific to diffusive normal metal (DN) / triplet superconductor junctions are studied within the quasiclassical Green¿s function formalism. The pair amplitude fN as a function of energy ¿ in DN, satisfies an anomalous relation, fN(¿)=¿fN*(¿¿) , contrary to that in singlet superconductor junctions case where fN(¿)=fN*(¿¿) . Such an unusual ¿ 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 Sr2RuO4 , which is considered to have a px+ipy -wave symmetry.
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Copyright:© 2005 The American Physical Society
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