Nonlinear Transport in Semiconductor Superlattices
Nonlinear electronic transport in weakly coupled superlattices results in formation of electric field domains, self-sustained current oscillations (periodic, quasiperiodic or chaotic), wave propagation and other interesting phenomena. These are explained here by means of a discrete self-consistent model including quantum mechanically calculated tunneling current, detailed electrostatics and appropiate boundary conditions. Simpler discrete drift-diffusion models (for which analytical results are known) are also derived from our model.
KeywordsTunneling Current Current Trace Current Spike Nonlinear Transport Electric Field Profile
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- 1.Shaw, M.P., Mitin, V.V., Schöll, E. and Grubin, H.L. (1992) The Physics of Instabilities in Solid State Electron Devices. Plenum Press, New York, 1992.Google Scholar
- 2.Merlin, R. et al. (1995) in Proc. 22nd ICPS. edited by D.J. Lockwood, World Scientific, p. 1039.Google Scholar
- 7.Bonilla, L.L. (1995) in Nonlinear Dynamics and Pattern Formation in Semiconductors and Devices, edited by F.J. Niedernostheide Springer-Verlag, Berlin, p. 1.Google Scholar
- 10.Bulashenko, O.M. and Bonilla, L.L. (1995) Phys. Rev. B, 52, p. 7849; Bulashenko, O.M., Garcia, M.J. and Bonilla, L.L. (1996) ibid 53, p. 10008.Google Scholar
- 13.Goldman, V.J. et al. (1987) Phys. Rev. B, 35, p.9387; (1987) Phys. Rev. Lett., 58, p. 1256.Google Scholar
- 15.Wacker, A. (1998) in Theory and transport properties of semiconductor nanostructures. Edited by E. Schöll, Chapman and Hall, New York, chapter 10.Google Scholar
- 24.Sanchez, D., Platero, G. and Bonilla, L.L. (2001) Phys. Rev. B,63 201306(R).Google Scholar