Temperature dependent weak field Hall resistance in 2D carrier systems

Details Temperature dependent weak field Hall resistance in 2D carrier systems Temperature dependent weak field Hall resistance in 2D carrier systems

2004-12-23

arxiv.org/abs/cond-mat/0412670v2

Phys. Rev. Lett. 95, 016401 (2005).

Physics

Condensed Matter

Disordered Systems and Neural Networks

5 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.95.016401

Using the Drude-Boltzmann semiclassical transport theory, we calculate the weak-field Hall resistance of a two-dimensional system at low densities and temperatures, assuming carrier scattering by screened random charged impurity centers. The temperature dependent 2D Hall coefficient shows striking non-monotonicity in strongly screened systems, and in particular, we qualitatively explain the recent puzzling experimental observation of a decreasing Hall resistance with increasing temperature in a dilute 2D hole system. We predict that the impurity scattering limited Hall coefficient will eventually increase with temperature at higher temperatures.

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