Density-induced interchange of anisotropy axes at half-filled high Landau levels |
| |
Authors: | Zhu J Pan W Stormer H L Pfeiffer L N West K W |
| |
Institution: | Department of Physics, Columbia University, New York, New York 10027, USA. |
| |
Abstract: | We observe density-induced 90 degrees rotations of the anisotropy axes in transport measurements at half-filled high Landau levels in the two dimensional electron system, where stripe states are proposed ( nu = 9/2, 11/2, etc.). Using a field effect transistor, we find the transition density to be 2.9x10(11) cm(-2) at nu = 9/2. Hysteresis is observed in the vicinity of the transition. We construct a phase boundary in the filling factor magnetic field plane in the regime 4.4
|
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|