Shubnikov-de Haas effect in the superconducting state of an organic superconductor

Authors
Wosnitza, J Wanka, S Hagel, J Haussler, R von Lohneysen, H Schlueter, JA Geiser, U Nixon, PG Winter, RW Gard, GL
Citation
J. Wosnitza et al., Shubnikov-de Haas effect in the superconducting state of an organic superconductor, PHYS REV B, 62(18), 2000, pp. R11973-R11976
Citations number
29
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
18
Year of publication
2000
Pages
R11973 - R11976
Database
ISI
SICI code
0163-1829(20001101)62:18<R11973:SHEITS>2.0.ZU;2-V
Abstract
We report the,observation of Shubnikov-de Haas (SdH) oscillations in the mi xed state of the organic superconductor beta"-(BEDT-TTF)(2)SF5CH2CF2SO3 (T( c)approximate to4.4 K). At low temperatures the SdH oscillations per sist c learly below the upper critical field B-c2(0)approximate to3.6 T almost dow n to the field where the resistivity vanishes. Rather unusually, no additio nal damping of the SdH-signal amplitude - as well as of the de Haas-van Alp hen amplitude - is observed in the superconducting state. This indicates th at the damping in the vortex state of this quasi-two-dimensional supercondu ctor is different in character to that observed for most three-dimensional materials.