TY - JOUR
T1 - Measurement of the Frequency-Dependent Conductivity in Sapphire
AU - Shan, Jie
AU - Wang, Feng
AU - Knoesel, Ernst
AU - Bonn, Mischa
AU - Heinz, Tony F.
PY - 2003
Y1 - 2003
N2 - Electron transport of photoexcited single-crystal sapphire ([Formula presented]) is characterized by terahertz time-domain spectroscopy. The complex conductivity displays a Drude-type frequency dependence, which yields carrier scattering rates and densities. Carrier scattering is dominated by interactions with acoustical and optical phonons at low and high temperatures, respectively, and follows Matthiessen’s law over the measured temperature range of 40–350 K. The results, including low-temperature mobilities [Formula presented], are compatible with a large-polaron description of the conduction electrons.
AB - Electron transport of photoexcited single-crystal sapphire ([Formula presented]) is characterized by terahertz time-domain spectroscopy. The complex conductivity displays a Drude-type frequency dependence, which yields carrier scattering rates and densities. Carrier scattering is dominated by interactions with acoustical and optical phonons at low and high temperatures, respectively, and follows Matthiessen’s law over the measured temperature range of 40–350 K. The results, including low-temperature mobilities [Formula presented], are compatible with a large-polaron description of the conduction electrons.
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U2 - 10.1103/PhysRevLett.90.247401
DO - 10.1103/PhysRevLett.90.247401
M3 - Article
AN - SCOPUS:80051527615
SN - 0031-9007
VL - 90
SP - 4
JO - Physical review letters
JF - Physical review letters
IS - 24
ER -