期刊
APPLIED PHYSICS LETTERS
卷 99, 期 23, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3669402
关键词
-
资金
- U.S. National Science Foundation [DMR-1006640]
- DOE Basic Energy Sciences [DEFG02-02ER45994]
- Center for Energy Efficient Materials, an Energy Frontier Research Center
- DOE [DE-SC0001009]
- MURI of the Army Research Office [W911-NF-09-1-0398]
- NNIN network
Heterostructures and superlattices consisting of a prototype Mott insulator, GdTiO3, and the band insulator SrTiO3 are grown by molecular beam epitaxy and show intrinsic electronic reconstruction, approximately 1/2 electron per surface unit cell at each GdTiO3/SrTiO3 interface. The sheet carrier densities in all structures containing more than one unit cell of SrTiO3 are independent of layer thicknesses and growth sequences, indicating that the mobile carriers are in a high concentration, two-dimensional electron gas bound to the interface. These carrier densities closely meet the electrostatic requirements for compensating the fixed charge at these polar interfaces. Based on the experimental results, insights into interfacial band alignments, charge distribution, and the influence of different electrostatic boundary conditions are obtained. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3669402]
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据