Abstract
We report on measurements of absorption from applied ac fields in Anderson-localized indium-oxide films. The absorption shows a roll-off at a frequency that is much smaller than the electron-electron scattering rate measured at the same temperature in diffusive samples of this material. These results are interpreted as evidence for discreteness of the energy spectrum.
| Original language | English |
|---|---|
| Article number | 156602 |
| Journal | Physical Review Letters |
| Volume | 108 |
| Issue number | 15 |
| DOIs | |
| State | Published - 13 Apr 2012 |