Reference : Modular recursive Green's function method for ballistic quantum transport
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/17405
Modular recursive Green's function method for ballistic quantum transport
English
Rotter, S. [Technische Universität Wien = Vienna University of Technology - TU Vienna > Institute for Theoretical Physics]
Tang, J. Z. [University of Tennessee, Knoxville > Department of Physics]
Wirtz, Ludger mailto [Technische Universität Wien = Vienna University of Technology - TU Vienna > Institute for Theoretical Physics]
Trost, J. [Technische Universität Wien = Vienna University of Technology - TU Vienna > Institute for Theoretical Physics]
Burgdorfer, J. [Technische Universität Wien = Vienna University of Technology - TU Vienna > Institute for Theoretical Physics]
2000
Physical Review B
62
3
1950-1960
Yes (verified by ORBilu)
International
0163-1829
[en] A modification of the standard recursive Green's function method for quantum transport through microstructures is presented which is based on the decomposition into separable substructures. The Green's functions for these modules are joined by discretized Dyson equations. Nonseparable structures can thereby be calculated with the help of a few recursions with high accuracy. We apply this method to the calculation of ballistic quantum transport through a circular and stadium-shaped quantum dot for high mode numbers to test semi-classical predictions in detail. Among other results we find the breakdown of the semiclassical approximation for long path lengths which is due to the spreading of wave packets in the cavity.
http://hdl.handle.net/10993/17405
10.1103/PhysRevB.62.1950

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