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43. 


Description of unconventional electronic transport in mesoscopic structures



L. Craco, and G. Cuniberti

Applied Physics Letters 85, 3104 (2004)

Selected for the November 1, 2004 issue of the
Virtual Journal of Nanoscale Science & Technology
.

Inspired by a fair amount of experimental and theoretical works describing nonlinear transport in hybrid mesoscopic structures, we study a confined state coupled to different types of noninteracting leads. It is shown that specific properties of the electron bath, here simulated by the presence of van Hove singularities in the spectral density of the reservoirs, determine sharp resonances in the differential conductance at finite applied voltages. For both magnetic and nonmagnetic single impurities, the two-channel network exhibits a resonant negative differential conductance behavior in a region of parameters which is not expected for ideal electrodes. This result may have important ramifications in probing resonant tunneling experiments.



online .pdf paper (for personal use only)online .pdf paper (for personal use only)
doi absolute link10.1063/1.1799236
online abstract at the publisher site
publisher site (ISSN:0003-6951)
seleceted abstractVJ Nanoscale Science & Technology entry
mpi-pks/0009003
export BibTeX citation (txt file)
export EndNote citation (ris file)
IF(2004): 4.308


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