Regensburg 2000 – wissenschaftliches Programm
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HL: Halbleiterphysik
HL 5: Quantenpunkte und Quantendr
ähte: Theorie
HL 5.5: Vortrag
Montag, 27. März 2000, 11:30–11:45, H15
Transport and charging in a double barrier quantum wire — •T. Kleimann1, M. Sassetti1, and B. Kramer2 — 1Dipartimento di Fisica, INFM, Via Dodecaneso 33, I-16146 Genova — 2I. Inst. Theor. Physik, Universität Hamburg, Jungiusstr. 9, D-20355 Hamburg
We investigate the combined effects of interaction, charging and
impurities in a single channel quantum wire. A one dimensional quantum
dot, formed by two impurity potentials in a quantum wire, subject to
a general driving electric field is considered. We derive an effective
action[1] in which current and charging terms are identified and
investigated with respect to the symmetry of the system, strength and
range of the electron–electron interaction [2]. Several limiting cases
are discussed in the light of recent experiments [3,4].
[1] M. Sassetti, and B. Kramer, Phys. Rev. B 54, R5203 (1996)
[2] T. Kleimann et al., in preparation
[3] A. Yacoby et al., Phys. Rev. Lett. 77, 4612 (1996)
[4] O. M. Auslaender et al. cond-mat/9909138