Diffraction and boundary conditions in semiclassical open billiards

Article

关键词: CONDUCTANCE FLUCTUATIONS;    QUANTUM DOTS;    COHERENT MAGNETOTRANSPORT;    CONFINED ARRAYS;    MAGNETOCONDUCTANCE FLUCTUATIONS;    MAGNETIC-FIELDS;    SCATTERING;    ANTIDOTS;    TRANSPORT;    ORIGIN;   

DOI  :  10.1103/PhysRevB.66.155316

来源: SCIE

【 摘 要 】

The conductance through open quantum dots, or quantum billiards, shows fluctuations that can be explained as interference between waves following different paths between the leads of the billiard. We examine such systems by the use of a semiclassical Green's functions. In this paper we examine how the choice of boundary conditions at the lead mouths affects the diffraction. We derive a superior formula for the S-matrix element. Finally, we compare semiclassical simulations to quantum mechanical ones, and show that this formula yields superior results.

【 授权许可】

Free