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Charge Transport in Single‐Crystalline GaAs Nanobars: Impact of Band Bending Revealed by Terahertz Spectroscopy (Adv. Funct. Mater. 5/2022)
Author(s) -
Pushkarev Vladimir,
Němec Hynek,
Paingad Vaisakh C.,
Maňák Jan,
Jurka Vlastimil,
Novák Vít,
Ostatnický Tomáš,
Kužel Petr
Publication year - 2022
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202270034
Subject(s) - materials science , terahertz radiation , band bending , picosecond , spectroscopy , electron , terahertz spectroscopy and technology , bending , conductivity , optoelectronics , condensed matter physics , optics , physics , composite material , laser , quantum mechanics
Charge Confinement Electron motion inside nanostructures is strongly influenced by the presence of surfaces. In article number 2107403, Petr Kužel and co‐workers apply time‐resolved near‐field and far‐field terahertz spectroscopy and quantum‐mechanical calculations to study the conductivity in an array of aligned high‐quality GaAs nanobars. The study reveals that electrons are submitted to additional forces (band bending) close to the nanobar surfaces, which greatly enhance confinement of electrons at the picosecond timescale.