The dynamic instability of the moving vortex lattice at high driving currents in NbN/CuNi-based and NbN nanostripes designed for optical detection has been studied. By applying the model proposed by Larkin and Ovchinnikov [Zh. Eksp. Teor. Fiz. 68, 1915 (1975)], from the critical velocity v* for the occurrence of the instability, it was possible to estimate the values of the quasiparticle relaxation times ?E. The results show that the NbN/CuNi-based devices are characterized by shorter values of ?E compared to that of NbN.

Quasiparticle energy relaxation times in NbN/CuNi nanostripes from critical velocity measurements

Cirillo C;Pagliarulo V;Bonavolonta C;Parlato L;Pepe GP;Attanasio C
2011

Abstract

The dynamic instability of the moving vortex lattice at high driving currents in NbN/CuNi-based and NbN nanostripes designed for optical detection has been studied. By applying the model proposed by Larkin and Ovchinnikov [Zh. Eksp. Teor. Fiz. 68, 1915 (1975)], from the critical velocity v* for the occurrence of the instability, it was possible to estimate the values of the quasiparticle relaxation times ?E. The results show that the NbN/CuNi-based devices are characterized by shorter values of ?E compared to that of NbN.
2011
Istituto di Scienze Applicate e Sistemi Intelligenti "Eduardo Caianiello" - ISASI
Istituto Superconduttori, materiali innovativi e dispositivi - SPIN
NbN/CuNi nanostripes
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/35108
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