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Title: Limitations to the room temperature mobility of two- and three-dimensional electron liquids in SrTiO{sub 3}

Abstract

We analyze and compare the temperature dependence of the electron mobility of two- and three-dimensional electron liquids in SrTiO{sub 3}. The contributions of electron-electron scattering must be taken into account to accurately describe the mobility in both cases. For uniformly doped, three-dimensional electron liquids, the room temperature mobility crosses over from longitudinal optical (LO) phonon-scattering-limited to electron-electron-scattering-limited as a function of carrier density. In high-density, two-dimensional electron liquids, LO phonon scattering is completely screened and the mobility is dominated by electron-electron scattering up to room temperature. The possible origins of the observed behavior and the consequences for approaches to improve the mobility are discussed.

Authors:
; ; ; ; ; ;  [1]
  1. Materials Department, University of California, Santa Barbara, California 93106-5050 (United States)
Publication Date:
OSTI Identifier:
22412610
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CARRIER DENSITY; COMPARATIVE EVALUATIONS; DENSITY; DOPED MATERIALS; ELECTRON MOBILITY; ELECTRONS; PHONONS; STRONTIUM TITANATES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; THREE-DIMENSIONAL LATTICES; TWO-DIMENSIONAL SYSTEMS

Citation Formats

Mikheev, Evgeny, Himmetoglu, Burak, Kajdos, Adam P., Moetakef, Pouya, Cain, Tyler A., Van de Walle, Chris G., and Stemmer, Susanne. Limitations to the room temperature mobility of two- and three-dimensional electron liquids in SrTiO{sub 3}. United States: N. p., 2015. Web. doi:10.1063/1.4907888.
Mikheev, Evgeny, Himmetoglu, Burak, Kajdos, Adam P., Moetakef, Pouya, Cain, Tyler A., Van de Walle, Chris G., & Stemmer, Susanne. Limitations to the room temperature mobility of two- and three-dimensional electron liquids in SrTiO{sub 3}. United States. doi:10.1063/1.4907888.
Mikheev, Evgeny, Himmetoglu, Burak, Kajdos, Adam P., Moetakef, Pouya, Cain, Tyler A., Van de Walle, Chris G., and Stemmer, Susanne. Mon . "Limitations to the room temperature mobility of two- and three-dimensional electron liquids in SrTiO{sub 3}". United States. doi:10.1063/1.4907888.
@article{osti_22412610,
title = {Limitations to the room temperature mobility of two- and three-dimensional electron liquids in SrTiO{sub 3}},
author = {Mikheev, Evgeny and Himmetoglu, Burak and Kajdos, Adam P. and Moetakef, Pouya and Cain, Tyler A. and Van de Walle, Chris G. and Stemmer, Susanne},
abstractNote = {We analyze and compare the temperature dependence of the electron mobility of two- and three-dimensional electron liquids in SrTiO{sub 3}. The contributions of electron-electron scattering must be taken into account to accurately describe the mobility in both cases. For uniformly doped, three-dimensional electron liquids, the room temperature mobility crosses over from longitudinal optical (LO) phonon-scattering-limited to electron-electron-scattering-limited as a function of carrier density. In high-density, two-dimensional electron liquids, LO phonon scattering is completely screened and the mobility is dominated by electron-electron scattering up to room temperature. The possible origins of the observed behavior and the consequences for approaches to improve the mobility are discussed.},
doi = {10.1063/1.4907888},
journal = {Applied Physics Letters},
number = 6,
volume = 106,
place = {United States},
year = {Mon Feb 09 00:00:00 EST 2015},
month = {Mon Feb 09 00:00:00 EST 2015}
}