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Magnetic-barrier-induced conductance fluctuations in quantum wires
University of Dusseldorf.
University of Dusseldorf.
University of Dusseldorf.
University of Dusseldorf.
Vise andre og tillknytning
2008 (engelsk)Inngår i: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 78, nr 16, s. 165307-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Quasiballistic semiconductor quantum wires are exposed to localized perpendicular magnetic fields, also known as magnetic barriers. Pronounced, reproducible conductance fluctuations as a function of the magnetic barrier amplitude are observed. The fluctuations are strongly temperature dependent and remain visible up to temperatures of approximate to 10 K. Simulations based on recursive Greens functions suggest that the conductance fluctuations originate from parametric interferences of the electronic wave functions, which experience scattering between the magnetic barrier and the electrostatic potential landscape.

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2008. Vol. 78, nr 16, s. 165307-
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Identifikatorer
URN: urn:nbn:se:liu:diva-16094DOI: 10.1103/PhysRevB.78.165307OAI: oai:DiVA.org:liu-16094DiVA, id: diva2:133144
Tilgjengelig fra: 2009-01-07 Laget: 2009-01-07 Sist oppdatert: 2017-12-14

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