UNCONVENTIONAL VORTEX DYNAMICS IN THE LOW-FIELD SUPERCONDUCTING PHASES OF UPT3

Authors
AMANN A VISANI P AUPKE K MOTA AC MAPLE MB DALICHAOUCH Y ARMSTRONG PE FISK Z
Citation
A. Amann et al., UNCONVENTIONAL VORTEX DYNAMICS IN THE LOW-FIELD SUPERCONDUCTING PHASES OF UPT3, Europhysics letters, 33(4), 1996, pp. 303-308
Citations number
17
Categorie Soggetti
Physics
Journal title
Europhysics letters → ACNP
ISSN journal
02955075
Volume
33
Issue
4
Year of publication
1996
Pages
303 - 308
Database
ISI
SICI code
0295-5075(1996)33:4<303:UVDITL>2.0.ZU;2-5
Abstract
The flux dynamics at low magnetic fields in UPt3 shows a clear distinc tion between the relaxation of bulk vortices and those close to the su rface. In addition, in the high-temperature A-phase, vortices trapped in the bulk of the specimen after cycling it in a magnetic field creep out as expected, while bulk vortices in the B-phase remain strongly p inned, indicating that an intrinsic, novel pinning mechanism exists in the low-temperature superconducting phase of UPt3.