Electron transport in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">TiO</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span> probed by THz time-domain spectroscopy

E. Hendry; F. Wang; J. Shan; T. F. Heinz; M. Bonn

doi:10.1103/PhysRevB.69.081101

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Electron transport in ${TiO}_{2}$ probed by THz time-domain spectroscopy

E. Hendry, F. Wang, J. Shan, T. F. Heinz, and M. Bonn

Phys. Rev. B 69, 081101(R) – Published 19 February 2004

Abstract

Electron transport in crystalline ${TiO}_{2}$ (rutile phase) is investigated by frequency-dependent conductivity measurements using THz time-domain spectroscopy. Transport is limited by electron-phonon coupling, resulting in a strongly temperature-dependent electron-optical phonon scattering rate, with significant anisotropy in the scattering process. The experimental findings can be described by Feynman polaron theory within the intermediate coupling regime and allow for a determination of electron mobility.

Received 1 December 2003

DOI:https://doi.org/10.1103/PhysRevB.69.081101

Authors & Affiliations

E. Hendry^1,*, F. Wang², J. Shan², T. F. Heinz², and M. Bonn^1,3

¹Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, P.O. Box 9502, 2300 RA Leiden, The Netherlands
²Departments of Physics and Electrical Engineering, Columbia University, 538 West 120th Street, New York, New York 10027, USA
³FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ, Amsterdam, The Netherlands

^*Electronic address: e.hendry@chem.leidenuniv.nl

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Vol. 69, Iss. 8 — 15 February 2004

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