Unusual anisotropy of inplane field magnetoresistance in ultra-high mobility SiGe/Si/SiGe quantum wells

Abstract

We find an unusual anisotropy of the inplane field magnetoresistance in ultra-high mobility SiGe/Si/SiGe quantum wells. The anisotropy depends on the orientation between the inplane field, $B_{\parallel }$, and current, $I$, relative to the crystallographic axes of the sample and is a consequence of the intrinsic ridges on the quantum well surface. For the simplest orientations between current and crystallographic axes, a method of recalculating the magnetoresistance measured at $I\perp B_{\parallel }$ into the one measured at $I\parallel B_{\parallel }$ is suggested and is shown to yield results that agree with the experiment.

As published

References in corpus (4)

• Two-dimensional metal-insulator transition and in-plane magnetoresistance in a high mobility strained Si quantum well
• Ultra-high mobility two-dimensional electron gas in a SiGe/Si/SiGe quantum well
• Remote-doping scattering and the local field corrections in the 2D electron system in a modulation-doped Si/SiGe quantum well
• The effective electron mass in high-mobility SiGe/Si/SiGe quantum wells

Cited by in corpus (10)

• Metal-insulator transition and low-density phases in a strongly-interacting two-dimensional electron system
• Two-dimensional system of strongly interacting electrons in silicon (100) structures
• Spin independence of the strongly enhanced effective mass in ultra-clean SiGe/Si/SiGe two-dimensional electron system
• Spin effect on the low-temperature resistivity maximum in a strongly interacting 2D electron system
• Triple-top-gate technique for studying the strongly interacting 2D electron systems in heterostructures
• Stabilization of a two-dimensional quantum electron solid in perpendicular magnetic fields
• Band Flattening and Landau Level Merging in Strongly-Correlated Two-Dimensional Electron Systems
• Inequivalence of the low-density insulating state and quantum Hall insulating states in a strongly correlated two-dimensional electron system
• Quantum Wigner solid in two-dimensional electron systems in semiconductors
• Spin and valley effects on the quantum phase transition in two dimensions