Showing papers by "Venkatesh Narayanamurti published in 1985"
TL;DR: A substantial density of states between Landau levels is revealed, even in high-mobility single quantum wells, with no existing theoretical explanation for this anomaly.
Abstract: The density of states of two-dimensional electron systems in GaAs/AlGaAs single-layer and multilayer heterostructures has been determined through measurements of the high-field magnetization. Our results reveal a substantial density of states between Landau levels, even in high-mobility single quantum wells. There is no existing theoretical explanation for this anomaly.
197 citations
TL;DR: In this paper, the de Haas-van Alphen effect in GaAs/(AlGa)As two-dimensional electron systems was observed using a torsional magnetometer technique.
12 citations
01 Jan 1985
TL;DR: The first measurements of electric field induced heating of carriers and phonon emission in a 2D hole gas at the interface of GaAs/AlGaAs for fields up to 2kV/cm and a lattice temperature of 1.5K were reported in this paper.
Abstract: We report first measurements of electric field induced heating of carriers and phonon emission in a 2-D hole gas at the interface of GaAs/AlGaAs for fields up to 2kV/cm and a lattice temperature of 1.5K. We present evidence for a transition from acoustic to optic mode scattering as a function of field and a bottleneck in the heating at high fields.
3 citations