Classical orbit bifurcation and quantum interference in mesoscopic magnetoconductance

Details Classical orbit bifurcation and quantum interference in mesoscopic magnetoconductance Classical orbit bifurcation and quantum interference in mesoscopic magnetoconductance

1999-06-25

arxiv.org/abs/cond-mat/9906387v2

Europhys. Lett. 50, 293 (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, including 5 figures. Revised version with clarified discussion and minor editorial changes

Scientific paper

10.1209/epl/i2000-00269-3

We study the magnetoconductance of electrons through a mesoscopic channel with antidots. Through quantum interference effects, the conductance maxima as functions of the magnetic field strength and the antidot radius (regulated by the applied gate voltage) exhibit characteristic dislocations that have been observed experimentally. Using the semiclassical periodic orbit theory, we relate these dislocations directly to bifurcations of the leading classes of periodic orbits.

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