| Autor: |
Mourokh, Lev G., Kovalev, Vadim M., Horing, Norman J.M. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 4/1/2004, Vol. 95 Issue 7, p3557-3560, 4p, 1 Diagram, 3 Graphs |
| Abstrakt: |
We analyze electron transport through a biased asymmetric double-dot system in a parallel arrangement between leads. We show that the imposition of a dot-to-dot bias induces changes in the symmetry of the wave functions associated with the double-dot energy levels, resulting in a dip in the dependence of the lead-to-lead current on dot-to-dot bias. We also demonstrate that when the dot-to-dot bias compensates (energetically) the structure asymmetry, the lead-to-lead current will be an oscillating function of an applied magnetic field in the case in which only one of the double-dot levels is conductive. However, destructive interference between different parts of the same dot gives rise to suppression of current at high magnetic fields. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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