BLOCH DYNAMICS IN SPATIALLY LOCAL INHOMOGENEOUS ELECTRIC FIELDS
| Autor: | Joseph P. Reynolds, Jun He, Gerald J. Iafrate |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Physics
Wannier function Condensed matter physics Quantum-confined Stark effect Optical field Electronic Optical and Magnetic Materials Hardware and Architecture Quantum electrodynamics Electric field Electric potential Electrical and Electronic Engineering Electronic band structure Vector potential Bloch wave |
| Zdroj: | International Journal of High Speed Electronics and Systems. 11:425-453 |
| ISSN: | 1793-6438 0129-1564 |
| DOI: | 10.1142/s0129156401000903 |
| Popis: | The influence of local inhomogeneities on the electric field dependent properties of Bloch electrons is studied. The homogeneous electric field is described through the use of the vector potential, and the instantaneous Wannier functions of the homogeneous field dependent Hamiltonian are used as bases states to depict Bloch dynamics and properties. Model examples are treated using Slater-Koster inhomogeneities and nearest-neighbor tight-binding band structure in a one dimensional, single-band analysis. Detailed analysis is presented for the special case of a constant electric field; here the influence of localization due to the presence of the electric field is shown to clearly affect the energy spectrum of the Bloch electron for a single and double impurity configuration. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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