Anomalous surface impedance in a normal-metal/superconductor junction with a spin-active interface

Asano, Y. and Ozaki, M. and Habe, T. and Golubov, A. and Tanaka, Y. (2012) Anomalous surface impedance in a normal-metal/superconductor junction with a spin-active interface. Physical review B: Condensed matter, 86 (2). 024510-1 - 024510-8. ISSN 0163-1829

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Abstract:	We discuss the surface impedance (Z=R−iX) of a normal-metal/superconductor proximity structure taking into account the spin-dependent potential at the junction interface. Because of the spin-mixing transport at the interface, odd-frequency spin-triplet s-wave Cooper pairs penetrate into the normal metal and cause the anomalous response to electromagnetic fields. At low temperature, the local impedance at a surface of the normal metal shows the nonmonotonic temperature dependence and the anomalous relation R>X. We also discuss a possibility of observing such anomalous impedance in experiments.
Item Type:	Article
Faculty:	Science and Technology (TNW)
Research Group:	Interfaces and Correlated Electron Systems (ICE)
Link to this item:	http://purl.utwente.nl/publications/82264
Official URL:	http://dx.doi.org/10.1103/PhysRevB.86.024510
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