Measurement of the Frequency-Dependent Conductivity in Sapphire

Jie Shan, Feng Wang, Ernst Knoesel, Mischa Bonn, Tony F. Heinz

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Number of pages1
JournalPhysical Review Letters
Volume90
Issue number24
DOIs
StatePublished - Jan 1 2003

Fingerprint

sapphire
conductivity
scattering
conduction electrons
phonons
single crystals
spectroscopy
electrons
interactions
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Shan, Jie ; Wang, Feng ; Knoesel, Ernst ; Bonn, Mischa ; Heinz, Tony F. / Measurement of the Frequency-Dependent Conductivity in Sapphire. In: Physical Review Letters. 2003 ; Vol. 90, No. 24.
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Measurement of the Frequency-Dependent Conductivity in Sapphire. / Shan, Jie; Wang, Feng; Knoesel, Ernst; Bonn, Mischa; Heinz, Tony F.

In: Physical Review Letters, Vol. 90, No. 24, 01.01.2003.

Research output: Contribution to journalArticle

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AU - Wang, Feng

AU - Knoesel, Ernst

AU - Bonn, Mischa

AU - Heinz, Tony F.

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