Thermoelectrics: Thermopower Enhancement by Fractional Layer Control in 2D Oxide Superlattices (Adv. Mater. 39/2014)
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Abstract
A precision-growth capability enabled by advanced pulsed-laser epitaxy can deliberately design oxide superlattices at the atomic scale. On page 6701, W. S. Choi, H. Ohta, and H. N. Lee demonstrate that a fractional δ-doping in 2D oxide superlattices with precisely controlled interface compositions can improve the thermopower of oxide thermoelectrics by 300% compared with that of bulk counterparts.