期刊
APPLIED PHYSICS LETTERS
卷 97, 期 22, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3524198
关键词
-
资金
- Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-AC02-76SF00515]
We fabricated high-mobility delta-doped structures in SrTiO3 thin films in order to investigate the low temperature electronic transport properties of confined carriers in this system. An enhancement of the electron mobility above the bulk value was observed as the doped layer thickness decreased. High-field Hall measurements revealed that this mobility enhancement originates from higher-mobility electrons in the undoped clean regions, which have quantum-mechanically broadened from the doped layer. Because of the absence of apparent lattice misfit between the layers, this structure is highly suitable for investigating two-dimensional electron gases in SrTiO3. (C) 2010 American Institute of Physics. [doi:10.1063/1.3524198]
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