| Issue |
Europhys. Lett.
Volume 36, Number 1, October 1996
|
|
|---|---|---|
| Page(s) | 61 - 66 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00187-x | |
| Published online | 01 September 2002 | |
Spectroscopy of local density of states fluctuations in a disordered conductor
1
Max-Planck-Institut für Festkörperforschung,
Heisenbergstr. 1, 70569 Stuttgart, Germany
2
Institut für Festkörperphysik, Universität Hannover,
Appelstr. 2, 30167
Hannover, Germany
3
School of Physics and Chemistry, Lancaster University - LA1 4YB Lancaster, UK
4
Institut für Schicht- und Ionentechnik, Forschungszentrum Jülich GmbH Postfach
1913, 52428 Jülich, Germany
Received:
24
July
1996
Accepted:
6
August
1996
The local density of states of a degenerate semiconductor is investigated at low magnetic fields by resonant tunneling through a discrete localized energy level. Mesoscopic fluctuations of the local density of states below the Fermi level are imaged as temperature-insensitive fine structure in the tunneling current. These fluctuations are attributed to quantum interference of diffusive electron waves in the three-dimensional disordered system.
PACS: 72.15.Rn – Quantum localization / 72.20.My – Galvanomagnetic and other magnetotransport effects / 73.40.Gk – Tunneling
© EDP Sciences, 1996
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