title: Thermopower enhancement by fractional layer control in 2D oxide superlattices.
abstract: Precise tuning of the 2D carrier density by using fractional δ-doping of d electrons improves the thermoelectric properties of oxide heterostructures. This promising result can be attributed to the anisotropic band structure in the 2D system, indicating that δ-doped oxide superlattices are good candidates for advanced thermoelectrics.
authors: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA; Department of Physics, Sungkyunkwan University, Suwon, 440-746, Korea; Center for Integrated Nanostructure Physics, Institute of Basic Science (IBS), Sungkyunkwan University, Suwon, 440-746, Korea.
authors: Woo Seok
authors: WS
authors: Choi
authors: Hiromichi
authors: H
authors: Ohta
authors: Ho Nyung
authors: HN
authors: Lee
keywords: complex oxide; fractional delta-doping; superlattices; thermoelectrics; thermopower; transition metal oxides; two-dimensional transport