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Experimental test of universal conductance fluctuations by means of wave-chaotic microwave cavities
 

Summary: Experimental test of universal conductance fluctuations
by means of wave-chaotic microwave cavities
Sameer Hemmady,1,2,3,4
James Hart,1
Xing Zheng,1
Thomas M. Antonsen, Jr.,1,2,3
Edward Ott,1,2,3
and Steven M. Anlage1,2,4
1Department of Physics, University of Maryland, College Park, Maryland 20742-4111, USA
2
Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742-3285, USA
3Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742-3511, USA
4Center for Superconductivity Research, University of Maryland, College Park, Maryland 20742-4111, USA
Received 26 June 2006; published 15 November 2006
The mathematical equivalence of the time-independent Schrödinger equation and the Helmholtz equation is
exploited to provide a means of studying universal conductance fluctuations in ballistic chaotic mesoscopic
systems using a two-dimensional microwave cavity. The classically chaotic ray trajectories within a suitably
shaped microwave cavity play a role analogous to that of the chaotic dynamics of noninteracting electron
transport through a ballistic quantum dot in the absence of thermal fluctuations. The microwave cavity is
coupled through two single-mode ports and the effect of nonideal coupling between the ports and cavity is

  

Source: Anlage, Steven - Center for Superconductivity Research & Department of Physics, University of Maryland at College Park

 

Collections: Materials Science