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Title: Absolute negative conductivity and spontaneous current generation in semiconductor superlattices with hot electrons
Authors: Cannon, E.H.
Kusmartsev, F.V.
Alekseev, Kirill N.
Campbell, D.K.
Keywords: mesoscopic systems
quantum hall effect
Issue Date: 1999
Abstract: We study electron transport through a semiconductor superlattice subject to an electric field parallel to and a magnetic field perpendicular to the growth axis. Using a single miniband, semiclassical balance equation model with both elastic and inelastic scattering, we find that (1) the current-voltage characteristic becomes multistable in a large magnetic field; and (2) "hot" electrons display novel features in their current-voltage characteristics, including absolute negative conductivity (ANC) and, for sufficiently strong magnetic fields, a spontaneous dc current at zero bias. We discuss possible experimental situations providing the necessary hot electrons to observe the predicted ANC and spontaneous dc current generation.
Description: This is a pre-print. It is also available at: http://arxiv.org/abs/cond-mat/9910042.
URI: https://dspace.lboro.ac.uk/2134/1238
Appears in Collections:Pre-Prints (Physics)

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