Non-linear Resistivity of a Two-Dimensional Electron Gas in a Magnetic Field

Details Non-linear Resistivity of a Two-Dimensional Electron Gas in a Magnetic Field Non-linear Resistivity of a Two-Dimensional Electron Gas in a Magnetic Field

2006-11-06

arxiv.org/abs/cond-mat/0611130v1

Phys. Rev. B 76, 115331 (2007).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevB.76.115331

We develop a theory of nonlinear response to an electric field of a two-dimensional electron gas (2DEG) placed in a classically strong magnetic field. The latter leads to a non-linear current-voltage characteristic at a relatively weak electric field. The origin of the non-linearity is two-fold: the formation of a non-equilibrium electron distribution function, and the geometrical resonance in the inter-Landau-levels transitions rates. We find the dependence of the current-voltage characteristics on the electron relaxation rates in the 2DEG.

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