Linear in-plane magnetoconductance and spin susceptibility of a 2D electron gas on a vicinal silicon surface

TL;DR

This study investigates the linear in-plane magnetoconductance and spin susceptibility of a 2D electron gas on a vicinal silicon surface, revealing unusual linear magnetoresistance influenced by spin polarization and impurity scattering.

Contribution

It provides new insights into the magnetotransport properties of 2DEG on vicinal silicon surfaces, highlighting the role of spin polarization and spectral minigaps.

Findings

Linear magnetoconductance observed up to 15 T

Anomalies near minigap boundaries in the electron spectrum

Spin polarization affects impurity scattering leading to magnetoresistance

Abstract

In this work we have studied the parallel magnetoresistance of a 2DEG near a vicinal silicon surface. An unusual, linear magnetoconductance is observed in the fields up to $B = 15$ T, which we explain by the effect of spin olarization on impurity scattering. This linear magnetoresistance shows strong anomalies near the boundaries of the minigap in the electron spectrum of the vicinal system.