Phase coherence and trajectory trapping around one or two independently controllable antidots in quantum wires

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.51.11213
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TypeArticle
Journal titlePhysical Review B: condensed matter and materials physics
Volume51
Issue16
Pages1121311216; # of pages: 4
AbstractMagnetoconductance measurements have been made on an interesting versatile system. Six independent gates, on a two-dimensional electron-gas heterostructure, are used to define electrostatically two independently controllable antidots within a quantum wire. Measurements in a magnetic field show trapping of trajectories around either a single or a pair of antidots. Collimation, adiabatic transport, and trapping effects combine to create a rich variety of magnetoconductance features which are modulated by large single-period Aharonov-Bohm oscillations at temperatures below 1 K. Experimental features are compared to results from semiclassical ballistic-trajectory models and the similarities and differences between this system and antidot lattices discussed.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Microstructural Sciences
Peer reviewedNo
NPARC number12328848
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Record identifierfbd9860a-eb22-4483-b655-e4ffeee271e9
Record created2009-09-10
Record modified2016-05-09
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