Observation of an Even-Odd Asymmetric Transport in High Landau Levels Supported by the National Basic Research Program of China under Grant Nos 2014CB920904 and 2013CB921702, the National Natural Science Foundation of China under Grant Nos 11174340, 11174357, 91221203 and 91421303, the Strategic Priority Research Program B of the Chinese Academy of Sciences under Grant No XDB07010100, the Gordon and Betty Moore Foundation through the EPiQS initiative under Grant No GBMF4420, and the National Sci

• Published in: Chinese physics letters Vol. 34; no. 3
• Main Authors: Liu, Guang-Tong, Zhu, Yu-Ying, Wang, Qin, Pang, Yuan, Fan, Jie, Jing, Xiu-Nian, Ji, Zhong-Qing, Yang, Chang-Li, Lu, Li, Du, Rui-Rui, Pfeiffer, L. N., West, K. W.
• Format: Journal Article
• Language: English
• Published: Chinese Physical Society and IOP Publishing Ltd 01.03.2017
• ISSN: 0256-307X
• DOI: 10.1088/0256-307X/34/3/037301

Magnetotransport experiments including tilt fields are performed on ultrahigh mobility L-shaped Hall-bar samples of GaAs/AlGaAs quantum wells. The low-temperature longitudinal resistivity (ρxx) data demonstrate that a striking even-odd asymmetric transport exists along the [ 11¯0 ] direction at half filling in N ≥ 2 high Landau levels. Although the origin for the peculiar even-odd asymmetry remains unclear, we propose that the coupling strength between electrons within the same Landau level and between the neighboring two Landau levels should be considered in future studies. The tilt field data show that the in-plane field can suppress the formation of both bubble and stripe phases.