Phase diagram for two-dimensional arrays of small Josephson junctions withshunt resistors

Authors
Yamaguchi, T Yagi, R Kanda, A Ootuka, Y Kobayashi, S
Citation
T. Yamaguchi et al., Phase diagram for two-dimensional arrays of small Josephson junctions withshunt resistors, PHYSICA C, 352(1-4), 2001, pp. 181-185
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
352
Issue
1-4
Year of publication
2001
Pages
181 - 185
Database
ISI
SICI code
0921-4534(200104)352:1-4<181:PDFTAO>2.0.ZU;2-6
Abstract
We have studied the ground state of two-dimensional small-Josephson-junctio n arrays fabricated by the electron-beam lithography. To control the streng th of dissipation, we attach an Ohmic resistor (a Cr thin film) to each Al- AlOx-Al junction. The I-V curve shows a transition from the insulating beha vior with the Coulomb gap to the superconducting behavior with DC-Josephson -like current as the shunt resistance decreases. The measured phase diagram is compared with theories of the dissipative phase transition. (C) 2001 El sevier Science B.V. All rights reserved.