Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2008-05-23
Phys. Rev. B 78, 165307 (2008)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 4 figures
Scientific paper
10.1103/PhysRevB.78.165307
Quasi-ballistic 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 about 10 K. Simulations based on recursive Green 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.
Cerchez M.
Heinzel Thomas
Hugger S.
Reuter Dennis
Tarasov Alexander
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