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Transient terahertz conductivity of GaAs nanowires

Abstract:
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. © 2007 American Chemical Society.
Publication status:
Published

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Publisher copy:
10.1021/nl071162x

Authors


Parkinson, P More by this author
Lloyd-Hughes, J More by this author
Jagadish, C More by this author
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Journal:
NANO LETTERS
Volume:
7
Issue:
7
Pages:
2162-2165
Publication date:
2007-07-05
DOI:
EISSN:
1530-6992
ISSN:
1530-6984
URN:
uuid:58448406-25ad-473e-84ce-82bd4041f7d4
Source identifiers:
8618
Local pid:
pubs:8618
Language:
English

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