Systematic Control of Carrier Doping without Disorder at Interface of Oxide Heterostructures

preprint2009arXivOpen access

Abstract

We propose a method to systematically control carrier densities at the interface of transition-metal oxide heterostructures without introducing disorders. By inserting non-polar layers sandwiched by polar layers, continuous carrier doping into the interface can be realized. This method enables us to control the total carrier densities per unit cell systematically up to high values of the order unity.

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