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| VOLUME 82 | ISSUE 8 |
PAGE 556
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| Trapping of an electron in the transmission through two quantum dots coupled by a wire |
A. F. Sadreev+*, E. N. Bulgakov+, I. Rotter
+Institute of Physics, Academy of Sciences, 660036 Krasnoyarsk, Russia
*Department of Physics and Measurement Technology, Linköping University, S-581 83 Linköping, Sweden
 Max-Planck-Institut für Physik komplexer Systeme, D-01187 Dresden, Germany
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PACS: 03.75.Fi, 05.30.Jp, 67.57.Fg
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Abstract
We consider single-channel transmission through a double quantum
dot that consists of two identical single dots coupled by a wire.
The numerical solution for the scattering wave function shows that
the resonance width of a few of the states may vanish when the
width (or length) of the wire and the energy of the incident
particle take a certain value each. In such a case, a particle is
trapped inside the wire as the numerical visualization of the
scattering wave function shows. To understand these numerical
results, we explore a simple model with a small number of states
which allows to consider the problem analytically. If the
eigenenergies of the closed system cross the energies of the
transmission zeros, the wire effectively decouples from the rest
of the system and traps the particle.
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Список работ, цитирующих данную статью, см. здесь.
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