Anisotropic magnetoresistance in a 2DEG in a quasi-random magnetic field
A. W. Rushforth, B. L. Gallagher, P. C. Main, A. C. Neumann, M. Henini, C. H. Marrows, B. J. Hickey
Abstract
We present magnetotransport results for a 2D electron gas (2DEG) subject to the quasi-random magnetic field produced by randomly positioned sub-micron Co dots deposited onto the surface of a GaAs/AlGaAs heterostructure. We observe strong local and non-local anisotropic magnetoresistance for external magnetic fields in the plane of the 2DEG. Monte-Carlo calculations confirm that this is due to the changing topology of the quasi-random magnetic field in which electrons are guided predominantly along contours of zero magnetic field.
Create a lesson
Related papers
Multi-Channel Non-Abelian Edge Pumping via Multi-Degeneracy Encircling
Qingyang Mo, Jiacheng Sun, Zhongfu Li et al.
Ultrafast Moiré Exciton Dynamics Revealed by Two-Dimensional Coherent Spectroscopy
Deran Zhang, Zhexue Chen, Dongxue Chen et al.
Probing Non-Abelian Topology through Quench Dynamics
Zhenming Zhang, Tianyu Li, Wei Yi
Supermoiré Formation and Robust Topological Edge State in Helical Trilayer Graphene
Hong Li, Huandong Chen, Seongyeon Youn et al.
Prediction of antimagnon-polarons with intrinsic momentum-space level attraction
Chongzhou Wang, Zhengda Jing, Weichao Yu
Parity-Selective Quantum Interference in Unconventional Magnets
Yiyuan Chen, Xiao-Bin Qiang, Hai-Zhou Lu et al.