| Numéro |
J. Phys. IV France
Volume 09, Numéro PR10, December 1999
International Workshop on Electronic CrystalsECRYS-99 |
|
|---|---|---|
| Page(s) | Pr10-153 - Pr10-154 | |
| DOI | https://doi.org/10.1051/jp4:19991039 | |
International Workshop
on Electronic Crystals
ECRYS-99
J. Phys. IV France 09 (1999) Pr10-153-Pr10-154
DOI: 10.1051/jp4:19991039
1 Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, Anhui, China
2 LEPES/CNRS, BP. 166, 38042 Grenoble cedex 9, France
© EDP Sciences 1999
ECRYS-99
J. Phys. IV France 09 (1999) Pr10-153-Pr10-154
DOI: 10.1051/jp4:19991039
Depinning of the charge density wave under inhomogeneous conditions in the blue bronze K0.30MoO3
M. Tian1 and J. Dumas21 Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, Anhui, China
2 LEPES/CNRS, BP. 166, 38042 Grenoble cedex 9, France
Abstract
In order to explore non-local effects in the CDW depinning in the blue bronze K0.30MoO3 , we have
studied the influence of a longitudinal dc current Idc flowing in the vicinity of the bottom surface of the sample on
the threshold field Et.p measured on the top surface with unipolar rectangular current pulses Ip, flowing through the
bulk of the sample. When Idc and Ip have the same (resp. opposite) sense, Et.p decreaes (resp. increases) with Idc. In
both cases, the excess CDW current ICDW depends on Idc and obeys a power law : ICDW α [Vp-Vt.p(Idc)]β with an
exponent β ˜ 1.3 which does not change with Idc.
© EDP Sciences 1999