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Electron pairing in periodic potentials under an external electric field

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Gaul, C. and Rodriguez, A. and Lima, R. P. A. and Domínguez-Adame Acosta, Francisco (2013) Electron pairing in periodic potentials under an external electric field. Physical Review B, 87 (22). ISSN 1098-0121

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Official URL: http://dx.doi.org/10.1103/PhysRevB.87.224306


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Abstract

We study the semiclassical dynamics of interacting electrons in a biased crystal lattice. A complex dynamical scenario emerges from the interplay between the Coulomb and the external electric fields. When the electrons are far apart, the Coulomb potential may be small compared to the external potential and the electrons oscillate with effective Bloch frequencies, determined by the local electric field. In the opposite case, nearby electrons either separate or form a bound pair, depending on the initial energy compared to the band width. The pair due to the Coulomb field is stable even in the absence of the external field.


Item Type:Article
Additional Information:

© 2013 American Physical Society.
Work in Madrid was supported by MICINN (Project No. MAT2010-17180). Research of C.G. was supported by a PICATA postdoctoral fellowship from the Moncloa Campus of International Excellence (UCM-UPM). R.P.A.L. would like to thank FAPEAL (Alagoas State Research Agency) via project PRONEX, CNPq, and FINEP (Brazilian Research Agencies) for partial financial support.

Uncontrolled Keywords:Bloch Oscillations, Semiconductor Superlattices, Magnetic Solitons, Particles
Subjects:Sciences > Physics > Materials
ID Code:27174
Deposited On:29 Oct 2014 10:47
Last Modified:08 Feb 2018 17:28

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