Abstract
A study of linearly dispersing collective mode in a quantum Hall ferromagnet was performed using the method of tunneling spectroscopy. Both quantum ferromagnetism and excitonic superfluidity was displayed by double-layer two-dimensional electron systems. The measured velocity of the collective mode was found to be in agreement with theoretical estimates for the Goldstone mode of the broken symmetry ground state.
| Original language | English (US) |
|---|---|
| Article number | 036803 |
| Pages (from-to) | 368031-368034 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 87 |
| Issue number | 3 |
| State | Published - Jul 16 2001 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy