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 τE. The results show that the NbN/CuNi-based devices are characterized by shorter values of τE compared to that of NbN.
Quasiparticle energy relaxation times in NbN/CuNi nanostripes from critical velocity measurements / C., Cirillo; V., Pagliarulo; H., Myoren; C., Bonavolontà; Parlato, Loredana; Pepe, GIOVANNI PIERO; C., Attanasio. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 84:(2011), pp. 054536-1-054536-1. [10.1103/PhysRevB.84.054536]
Quasiparticle energy relaxation times in NbN/CuNi nanostripes from critical velocity measurements
PARLATO, LOREDANA;PEPE, GIOVANNI PIERO;
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 τE. The results show that the NbN/CuNi-based devices are characterized by shorter values of τE compared to that of NbN.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
