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Stark Resonances Induced by the Exchange–Correlation Potential in Piezoelectric Nanowires
Author(s) -
Wołoszyn Maciej,
Spisak Bartłomiej J.
Publication year - 2017
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201700248
Subject(s) - nanowire , formalism (music) , shot noise , physics , stark effect , condensed matter physics , piezoelectricity , statistical physics , quantum mechanics , spectral line , optics , acoustics , art , musical , detector , visual arts
Self‐consistent Schrödinger–Poisson scheme is used to analyze the electronic transport in GaN/AlGaN nanowires containing a double‐barrier structure within the Landauer formalism. Results of the calculations indicate that the exchange–correlation potential leads to emergence of Stark resonances in the transport window. The shot noise characterizing the current fluctuations reveals sub‐Poissonian characteristics, significantly modified by the exchange–correlation contribution. As a consequence, we determine how geometric and material parameters affect those phenomena, which can be used to optimize the operation of such devices.