Abstract
The two-dimensional Wigner solid (WS) formed on the free surface of liquid helium shows strongly nonlinear transport proper-ties. Here we report on the observation and theoretical analysis of a novel nonlinear transport in the WS on both normal and superfluid He-3 surfaces. We have observed a transition from Ohmic to nonlinear transport over a wide temperature range, from 200 mu K to 200 mK at low electron velocities. The field-velocity (E-v) characteristics show peculiar nonmonotonic structures. We attribute the nonlinearity to the velocity-induced deformation of the periodic surface displacement due to the extremely strong damping in Fermi liquid He-3. The calculated E - v curves and thresholds are in excellent agreement with experiment. (c) 2005 Elsevier Ltd. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 1544-1548 |
| Number of pages | 5 |
| Journal | Journal of Physics and Chemistry of Solids |
| Volume | 66 |
| Issue number | 8-9 |
| DOIs | |
| State | Published - Sep 2005 |
| Event | 9th International Symposium on Quantum Condensed System (ISSP-9) - Tokyo, Japan Duration: 16 Nov 2004 → 19 Nov 2004 |
Keywords
- LIQUID-HELIUM
- CRYSTAL
- CONDUCTIVITY