Regensburg 2002 – wissenschaftliches Programm
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DY: Dynamik und Statistische Physik
DY 46: Poster
DY 46.5: Poster
Donnerstag, 14. März 2002, 15:30–18:00, D
Wavefunction Scarring in Open Quantum Dots: a Microwave-Billard Analog Study — •Y. H. Kim1, H. -J. Stöckmann1, J. Bird2, and M. Barth1 — 1AG Quantenchaos, Fachbereich Physik, Philipps-Universität Marburg, Renthof 5, D-35032 Marburg — 2Department of Electrical Engineering and Center for Solid State Electronics Research, Arizona State University, Tempe, AZ 85287-5706, USA
We study the wavefunctions and transmission properties of an open microwave cavity in the frequency range of 1 - 17 GHz. The transmission of microwaves between the input and output antennas of cavity is found to exhibit large fluctuations as a function of frequency, while the cavity wavefunctions are found to reveal the presence of periodically-recurring scars, in close correspondence with specific peaks in the Fourier transform of the transmission fluctuations. This work therefore provides strong support for the results of recent studies of open quantum dots [1], which have revealed the presence of measurable transport results associated specific wavefunction scars.
[1] R. Akis, D. K. Ferry, and J. P. Bird, Phys. Rev. Lett. 79, 123 (1997)