Journal
NANO LETTERS
Volume 7, Issue 7, Pages 2162-2165Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl071162x
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- Engineering and Physical Sciences Research Council [EP/D030242/1, GR/S41111/01] Funding Source: researchfish
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The time-resolved conductivity of isolated GaAs nanowires is investigated by optical-pump terahertz-probe time-domain spectroscopy. The electronic response exhibits a pronounced surface plasmon mode that forms within 300 fs before decaying within 10 ps as a result of charge trapping at the nanowire surface. The mobility is extracted using the Drude model for a plasmon and found to be remarkably high, being roughly one-third of that typical for bulk GaAs at room temperature.
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