Abstract
Two-dimensional (2D) electrons floating on the liquid He surface is a powerful tool to study the dynamic surface properties of both normal and superfluid He-3. From the mobility measurement an evidence is found for the existence of ripplons on liquid He-3 at least above 140 mK. When the 2D electrons form a Wigner solid (WS) at low temperatures, they arc accompanied with surface depression under each lattice site. Low frequency mobility of the WS probes the scattering of quasiparticles from the surface depression. The damping of high frequency magnetophonon resonances of the WS is dominated by the scattering of electrons from surface excitations. A comparative measurement on both He-3 and He-4 shows a prominent difference in the surface properties of He-3 from He-4 below 70 mK.
| Original language | English |
|---|---|
| Pages (from-to) | 467-476 |
| Number of pages | 10 |
| Journal | Journal of Low Temperature Physics |
| Volume | 126 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - Jan 2002 |
| Event | Symposium on Quantum Fluids and Solids (QFS 2001) - CONSTANCE, Germany Duration: 22 Jul 2001 → 27 Jul 2001 |
Keywords
- SUPERFLUID HE-3
- PLASMA RESONANCE