| Numéro |
J. Phys. IV France
Volume 09, Numéro PR10, December 1999
International Workshop on Electronic CrystalsECRYS-99 |
|
|---|---|---|
| Page(s) | Pr10-231 - Pr10-231 | |
| DOI | https://doi.org/10.1051/jp4:19991058 | |
International Workshop
on Electronic Crystals
ECRYS-99
J. Phys. IV France 09 (1999) Pr10-231-Pr10-231
DOI: 10.1051/jp4:19991058
1 SPEC, CEA Saclay, France
2 Research Institute for Solid State Physics, Budapest, Hungary
3 University of Nottingham, U.K.
4 University of London, U.K.
© EDP Sciences 1999
ECRYS-99
J. Phys. IV France 09 (1999) Pr10-231-Pr10-231
DOI: 10.1051/jp4:19991058
Evidence for a threshold force for displacement transverse to current for 2-D Wigner solid in a disorder field
Perrucho1, Gaal1, B. Sas2, C. Mellor3, Harris4, Etienne, LMM, CNRS, Bagneux, France, Henini3 and T. Williams11 SPEC, CEA Saclay, France
2 Research Institute for Solid State Physics, Budapest, Hungary
3 University of Nottingham, U.K.
4 University of London, U.K.
Abstract
Our measurements of the Hall effect in the sliding regime of the magnetically induced
quantum Wigner solid at GaAs/GaAlAs heterojunction shows it to appear only beyond a
threshold in current. This threshold is proportional to the threshold force required to induce
sliding. It can be understood as a minimum Lorentz force for displacing the charge solid
perpendicular to its current channels in the random field, as suggested theoretically for the
superconductor vortex system by Giamarchi and Le Doussal.
© EDP Sciences 1999