Orientational pinning of quantum Hall striped phase
E. E. Takhtamirov, V. A. Volkov
Abstract
In ultra-clean 2D electron systems on (001) GaAs/AlGaAs upon filling high Landau levels, it was recently observed a new class of collective states, which can be related to the spontaneous formation of a charge density wave (``striped phase''). We address to the following unsolved problem: what is the reason for stripe pinning along the crystallographic direction [110]? It is shown that in a single heterojunction (001) III-V the effective mass of 2D electrons is anisotropic. This natural anisotropy is due to the reduced (C2v) symmetry of the heterojunction and, even being weak (0.1 percent), can govern the stripe direction. A magnetic field parallel to the interface induces ``magnetic'' anisotropy of the effective mass. The competition of these two types of anisotropy provides quantitative description of the experiment.
Create a lesson
Related papers
Parametric Glassiness in Graphene-based Electronic Lévy Glass
Caue N. da Silva, Diego B. Fonseca, Adauto J. F. de Souza et al.
Giant geometric nonlinear transport in inhomogeneously strained Bi2Se3 single crystalline slabs
Igor Veremchuk, Pavlo Makushko, Anita Guarino et al.
Controlling the Atomic Reconstruction in Twisted MoSe2/WSe2 with a Monolayer hBN Spacer
Johannes Figueiredo, Kaiyuan Chen, Aubrey Penn et al.
Pulse-by-pulse imaging of reversible, collective reshaping in laser-excited gold nanorods
Mees Dieperink, Loriane Monin, Ichiro Ohnishi et al.
Atomic Edge Resonators Flatten Phonon Bands in Biphenylene Nanoribbons
V. L. Katkov, N. M. Chtchelkatchev, V. A. Osipov
Theory of exciton-exciton interactions in crystalline systems
L. Maisel Licerán, H. T. C. Stoof