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Effective Scattering Time in Zener Transition Between Bloch Bands |
YAN Wei-xian1;ZHAO Xian-geng1,2 |
1Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
2Institute of Applied Physics and Computational Mathematics, Beijing 100088
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Cite this article: |
YAN Wei-xian, ZHAO Xian-geng 1998 Chin. Phys. Lett. 15 213-215 |
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Abstract Based on a two-band tight-binding model, the dynamics of electrons under the action of static electric fields with Markoffian dephasing is investigated. The effective scattering time is obtained under the conditions of long-time limit and small interband communication through a perturbative calculation, from which the signature of Zener resonances and relatively long time evolution behavior are predicted.
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Keywords:
71.70.Ej
73.40.Gk
73.20.Dx
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Published: 01 March 1998
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