Magnetoconductance in lateral surface superlattices
| Autor: | Alfred M. Kriman, David K. Ferry, R. Mezenner, G.N. Maracas, H. H. Wieder, P. Chu, Wen-Ping Liu, R. A. Puechner, Peter G. Newman, Jun Ma, Gary H. Bernstein |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Physics
Condensed matter physics Lateral surface Superlattice Surfaces and Interfaces Landau quantization Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Surfaces Coatings and Films Hall effect Materials Chemistry Bloch oscillations Lithography Quantum well Universal conductance fluctuations |
| Zdroj: | Surface Science. 228:520-523 |
| ISSN: | 0039-6028 |
| Popis: | Microfabrication through the use of electron-beam lithography has allowed the creation of nanostructures with interesting and novel properties, and it is now possible to create potential-induced lateral surface superlattices. The magnetoconductance in such structures can be expected to be significantly different from that of normal quasi-two-dimensional systems. Here, we discuss the theoretical understanding and experimental studies that show the presence of the Aharonov-Bohm effect, universal conductance fluctuations, and structure in VH and σxx with h/e and 2h/e periodicity in the flux coupled through each quantum well of the superlattice. At high VSD, we have seen evidence for negative differential conductivity, which might be attributable to Bloch oscillations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|