Magnetoroton instabilities and static susceptibilities in higher Landau levels
| dc.creator | Goerbig, M. O. | |
| dc.creator | Smith, C. Morais | |
| dc.date | 2002-08-23 | |
| dc.date | 2002-12-18 | |
| dc.date.accessioned | 2026-07-25T14:50:40Z | |
| dc.description | We present analytical results concerning the magneto-roton instability in higher Landau levels evaluated in the single mode approximation. The roton gap appears at a finite wave vector, which is approximately independent of the LL index n, in agreement with numerical calculations in the composite-fermion picture. However, a large maximum in the static susceptibility indicates a charge density modulation with wave vectors $q_0(n)\sim 1/\sqrt{2n+1}$, as expected from Hartree-Fock predictions. We thus obtain a unified description of the leading charge instabilities in all LLs. | |
| dc.description | 4 pages, 5 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0208450 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0208450 | |
| dc.identifier | Phys. Rev. B 66, 241101 (2002) | |
| dc.identifier | doi:10.1103/PhysRevB.66.241101 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/28924 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Magnetoroton instabilities and static susceptibilities in higher Landau levels | |
| dc.type | text |