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Charge transport in single-crystalline GaAs nanobars: impact of band bending revealed by terahertz spectroscopy

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00552412" target="_blank" >RIV/68378271:_____/22:00552412 - isvavai.cz</a>

  • Alternative codes found

    RIV/00216208:11320/22:10455650

  • Result on the web

    <a href="https://doi.org/10.1002/adfm.202107403" target="_blank" >https://doi.org/10.1002/adfm.202107403</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1002/adfm.202107403" target="_blank" >10.1002/adfm.202107403</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Charge transport in single-crystalline GaAs nanobars: impact of band bending revealed by terahertz spectroscopy

  • Original language description

    Arrays of ultimate-quality single-crystalline GaAs nanobars are prepared via electron-beam lithography in a molecular-beam-epitaxy-grown GaAs layer transferred onto an electrically insulating and optically and terahertz transparent sapphire substrate. Measurements of ultrafast terahertz photoconductivity at 300 and 20 K in an array of such aligned nanobars by time-resolved THz and multi-THz spectroscopy and by time-resolved terahertz scanning near-field microscopy allow an in-depth understanding of the nanoscale electron motion inside the nanobars. A detailed analysis is performed in terms of quantum mechanical calculations of the mobility of carriers and in terms of plasmonic resonance controlled by photocarrier density. The investigations reveal a band bending close to the nanobar surfaces and its prominent effects on the picosecond charge carrier dynamics, leading to an enhanced localization of electrons at longer times.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2022

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Advanced Functional Materials

  • ISSN

    1616-301X

  • e-ISSN

    1616-3028

  • Volume of the periodical

    32

  • Issue of the periodical within the volume

    5

  • Country of publishing house

    DE - GERMANY

  • Number of pages

    9

  • Pages from-to

    2107403

  • UT code for WoS article

    000720265300001

  • EID of the result in the Scopus database

    2-s2.0-85119333243