Magnetoresistance anisotropy in Si /SiGe in tilted magnetic fields: experimental evidence for a stripe-phase formation |
| |
Authors: | Zeitler U Schumacher H W Jansen A G Haug R J |
| |
Institution: | Institut für Festk?rperphysik, Universit?t Hannover, Germany. zeitler@nano.uni-hannover.de |
| |
Abstract: | We observe pronounced transport anisotropies in magnetotransport experiments performed in the two-dimensional electron system of a Si/SiGe heterostructure. They occur when an in-plane field is used to tune two Landau levels with opposite spin to energetic coincidence. The observed anisotropies disappear drastically for temperatures above 1 K. We propose that our experimental findings may be caused by the formation of a unidirectional stripe phase oriented perpendicular to the in-plane field. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |