Regensburg 2004 – wissenschaftliches Programm
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DY: Dynamik und Statistische Physik
DY 46: Poster
DY 46.39: Poster
Donnerstag, 11. März 2004, 16:00–18:00, Poster D
Soft wall quantum dots modelled with microwave cavities — •Y.-H. Kim1, U. Kuhl1, H.-J. Stöckmann1, and J. P. Bird2 — 1Fachbereich Physik, Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany — 2Department of Electrical Engineering and Center for Solid State Electronics Research, Arizona State University, Tempe, AZ 85287-5706, USA
By an adiabatic change of the height of flat microwave cavities quantum billiards with soft wall potentials can be modelled [1]. Eigenresonances and eigenfunctions are investigated for an harmonic oscillator like billiard, serving as a test example, and a billiard corresponding to a quantum dot with soft walls [2]. For the harmonic oscillator a good agreement between measurements and theory is found. In case of the quantum dot billiard the behaviour of the resonances corresponding to bouncing ball states is investigated in detail.
[1] H.M. Lauber, Ph.D. thesis, Universität Heidelberg, 1994.
[2] de Moura et al, Phys. Rev. Lett. 88, 236804 (2002).