Research output: Contribution to Journal/Magazine › Journal article › peer-review
| <mark>Journal publication date</mark> | 01/2002 |
|---|---|
| <mark>Journal</mark> | Physica E: Low-dimensional Systems and Nanostructures |
| Issue number | 1-4 |
| Volume | 12 |
| Number of pages | 4 |
| Pages (from-to) | 516-519 |
| Publication Status | Published |
| <mark>Original language</mark> | English |
We have studied the low-temperature photoluminescence of high-mobility two-dimensional hole gases in GaAs quantum wells in magnetic fields up to 50 T. We have observed both spin states of the neutral (X-0) and of the singlet state of the positively charged exciton (X-), allowing us to determine their g-factors and the binding energy of X-. We find that the g-factor of the X is larger than that of X-0 by a factor of 1.6. In very high fields. we expect the low-energy spin-state of X- to be bound only because of the Zeeman interaction. (C) 2002 Elsevier Science B.V. All rights reserved.