Showing papers on "Magnetocapacitance published in 1992"
TL;DR: In this paper, a theory of linear screening by a two-dimensional electron liquid in a strong magnetic field is formulated quantitatively, and it is valid in the limit of small q. The results of the theory, including the negative sign of the screening radius, are shown to be confirmed by magnetocapacitance experiments.
Abstract: A theory of linear screening by a two-dimensional electron liquid in a strong magnetic field is formulated quantitatively. It takes into account electron-electron interaction and it is valid in the limit of small q. The results of the theory, including the negative sign of the screening radius, are shown to be confirmed by magnetocapacitance experiments. Near the fractional quantum Hall states the screening length tends to infinity, and the long-range potential of the remote donors makes the electron liquid very inhomogeneous. Different manifestations of this effect are discussed.
31 citations
TL;DR: In this article, the authors reported measurements of magnetocapacitance, Hall resistance, and magnetoresistance of gated InAs/AlSb quantum wells, by varying the voltage between the front gate and the two-dimensional electron gas, they were able to make magneto-transport measurements at 4.2 K.
14 citations
TL;DR: In this article, the density of states is calculated taking into account both linear and non-linear electron screening, and the crossover between these regimes is shown to be very sharp, which is in a good agreement with the recent magnetocapacitance measurements.
5 citations