| Zugriffsnummer | 18409 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Scaling and inelastic scattering in the integer quantum-Hall-effect |
| Autor(in); Institution |
Brandes, Tobias; Universität Hamburg, Institut für Theoretische Physik, Hamburg, GERMANY
Schweitzer, Ludwig; 8.12, Theoretische Physik, PTB-Braunschweig
Kramer, Bernhard; Universität Hamburg, Institut für Theoretische Physik, Hamburg, GERMANY
|
| Quelle/Jahr | Quantum dynamics of submicron structures:(1995), 115 - 127 |
| Schriftenreihe | NATO ASI series : Series E, Applied sciences: 291 |
| Herausgeber(in) |
Cerdeira, Hilda A.
|
| ISBN | 0-7923-3469-8 |
| Verlag | Dordrecht [u.a.]: Kluwer |
| Konferenzangaben | NATO Advanced Research Workshop on Submicron Quantum Dynamics, Triest, 13, June - 1, July, 1994, Italy |
| Zusammenfassung | The temperature exponent p of the inelastic scattering length lin ~ Tp/2 for a disordered two-dimensional electron system subject to a strong perpendicular magnetic field is calculated in second order perturbation theory for electron-phonon interaction. Taking into account the mulitfractal properties of the eigenstates at the center of a Landau band, we find p = 2 + η/2 for a narrow quantum well and 1 K ≤ T ≤ 10 K in the deformation potential approximation. The quantity η ≈ 0.40 appearing in the exponent reflects the non-conventional correlations of the eigenstates. For piezo-electric coupling p = 2 for T ≤ 2 K. The temperature dependence of the energy loss rate for hot electrons is also calculated and compared with experiments. The electron-electron scattering rate of the non-localized electrons in the band center depends linearly on temperature. |
