Reference : Gauge-invariant theory for semiclassical magnetotransport through ballistic microstru...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Gauge-invariant theory for semiclassical magnetotransport through ballistic microstructures
Wirtz, Ludger mailto [Technische Universit├Ąt Wien = Vienna University of Technology - TU Vienna > Institute for Theoretical Physics]
Tang, J. Z. [> >]
Burgdorfer, J. [> >]
Physical Review. B
Yes (verified by ORBilu)
[en] Within the semiclassical theory of magnetotransport through ballistic cavities, fluctuations in the transmission amplitude and in the conductance originate from the Aharonov-Bohm phase of directed areas. We formulate the semiclassical transmission amplitude in gauge-invariant form. The gauge invariant phases can be visualized in terms of areas enclosed by classical paths, which consist of the real path connecting the entrance point to the exit point and a virtual path leading back to the entrance point. We implement this method on different levels of a semiclassical description of magnetotransport with applications to magnetoconductance fluctuations and correlations. The validity of the semiclassical theories is analyzed. [S0163-1829(99)10903-2].

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