Feil, Thomas and Tranitz, H. P. and Reinwald, M. and Wegscheider, Werner (2005) Electric-field stabilization in a high-density surface superlattice. APPLIED PHYSICS LETTERS, 87 (21): 212112. ISSN 0003-6951,
Full text not available from this repository. (Request a copy)Abstract
By application of the cleaved-edge overgrowth technique, we realize a two-channel superlattice (SL) device. The structure combines the parallel transport through a low-density SL under almost homogeneous electric field conditions with that through a surface SL (SSL) with large carrier density, which is, without parallel transport, subject to pronounced field instabilities. Direct control of the SSL density allows a separation of both transport contributions. With parallel transport through the low-density SL, the current carried by the SSL is characteristic for a SL with homogeneous field distribution. In particular, it exhibits negative differential conductivity over a wide range of applied electric fields. In contrast, for current only through the SSL clear electric-field instabilities, typical for SLs at high densities are observed. Thus, by means of the parallel transport channel, field instabilities are avoided and transport in high-density SLs with a homogeneous field distribution becomes accessible. (c) 2005 American Institute of Physics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | GAAS/ALAS SUPERLATTICES; GAS; SEMICONDUCTORS; MODEL; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Apr 2021 06:56 |
| Last Modified: | 23 Apr 2021 06:56 |
| URI: | https://pred.uni-regensburg.de/id/eprint/35411 |
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