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5 papers · 1 filter
Simulation of Electron Transport through a Quantum Dot with Soft Walls
Bernhard Weingartner, Stefan Rotter, Joachim Burgdoerfer
We numerically investigate classical and quantum transport through a soft-wall cavity with mixed dynamics. Remarkable differences to hard-wall quantum dots are found which are, in…
Pseudo-Path Semiclassical Approximation to Transport through Open Quantum Billiards: Dyson Equation for Diffractive Scattering
C. Stampfer, L. Wirtz, S. Rotter +1
We present a semiclassical theory for transport through open billiards of arbitrary convex shape that includes diffractively scattered paths at the lead openings. Starting from a D…
Bound states in Andreev billiards with soft walls
F. Libisch, S. Rotter, J. Burgdoerfer +2
The energy spectrum and the eigenstates of a rectangular quantum dot containing soft potential walls in contact with a superconductor are calculated by solving the Bogoliubov-de Ge…
Shot noise in the chaotic-to-regular crossover regime
F. Aigner, S. Rotter, J. Burgdorfer
We investigate the shot noise for phase-coherent quantum transport in the chaotic-to-regular crossover regime. Employing the Modular Recursive Green's Function Method for both ball…
Fano resonances and decoherence in transport through quantum dots
S. Rotter, U. Kuhl, F. Libisch +2
A tunable microwave scattering device is presented which allows the controlled variation of Fano line shape parameters in transmission through quantum billiards. We observe a non-m…