Limitations to the room temperature mobility of two- and three-dimensional electron liquids in SrTiO3
Abstract
We analyze and compare the temperature dependence of the electron mobility of two- and three-dimensional electron liquids in SrTiO3. 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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 09, 2015
- Source ID
- 10.1063/1.4907888
Entities
People
- Adam P. Kajdos
- Burak Himmetoglu
- Chris G. Van de Walle
- Evgeny Mikheev
- Pouya Moetakef
- Susanne Stemmer
- Tyler A. Cain
Organizations
- National Science Foundation
- Office of Naval Research
- University of California