Journal
PHYSICAL REVIEW B
Volume 81, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.81.241307
Keywords
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Funding
- NSERC
- NSF [MRSEC DMR-0520495]
- DOE [DE-AC02-98CH10886]
- FENA center
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Electron gases created by modulating the charge density near interfaces and surfaces of insulating SrTiO3 offer a wide range of tunable behavior. Here, we utilize the nonlinear dielectric response of SrTiO3 to electrostatically manipulate the spatial confinement of an electron gas relative to an interface, where scattering is enhanced. Magnetotransport measurements reveal that the electron gas can be tuned from weakly localized to classical transport regimes. This crossover in transport demonstrates that elastic scattering can be electrostatically controlled, providing another degree of tunability for electron gases in SrTiO3.
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