Dissipative phase transition in a mesoscopic Josephson junction in a weak magnetic field

Authors
Penttila, JS Hakonen, PJ Paalanen, MA Parts, U Sonin, EB
Citation
Js. Penttila et al., Dissipative phase transition in a mesoscopic Josephson junction in a weak magnetic field, PHYSICA B, 284, 2000, pp. 1832-1833
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
284
Year of publication
2000
Part
2
Pages
1832 - 1833
Database
ISI
SICI code
0921-4526(200007)284:<1832:DPTIAM>2.0.ZU;2-V
Abstract
A dissipative phase transition (DPT) is found in resistively shunted (4-75 k Omega) mesoscopic Josephson junctions owing to suppression of macroscopic quantum tunneling of phase by the interaction with dissipative quantum-mec hanical environment. We have studied the behavior of this transition as a f unction of magnetic held. Instead of a field-induced insulator-superconduct or transition, we find a hysteretic insulator-insulator (I-I) transition. T he phase diagram for the DPT in a weak magnetic field is outlined. (C) 2000 Elsevier Science B.V. All rights reserved.