Abstract
We report photoluminescence measurements on low-disorder, dilute (p6×1010 cm-1), two-dimensional (2D) hole systems in GaAs/AlxGa1-xAs quantum wells at low Landau-level filling factors (). Near and below =1/3 we observe two additional lines in the spectra. One of these, appearing 0.8 meV below the main line, is similar to a line observed in 2D electron systems at very low (1/5), which has been attributed to the condensation of 2D electrons into a Wigner solid. The other, observed 4 meV below the main line, has no apparent counterpart in 2D electron systems. We interpret the data as consistent with the magnetic-field-induced localization of 2D holes, possibly into a pinned Wigner solid state.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 14054-14057 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 49 |
| Issue number | 19 |
| DOIs | |
| State | Published - 1994 |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics