SrCuO2/(Sr,Ca)CuO2 superlattice growth by pulsed-laser deposition
- 28 November 1994
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 65 (22) , 2869-2871
- https://doi.org/10.1063/1.112519
Abstract
Superlattice structures, consisting of SrCuO2 and (Sr,Ca)CuO2 layers in the tetragonal, ‘‘infinite layer’’ crystal structure, have been grown by pulsed‐laser deposition. Superlattice chemical modulation is observed for structures with SrCuO2 and (Sr,Ca)CuO2 layers as thin as a single unit cell (∼3.4 Å). X‐ray diffraction intensity oscillations, due to the finite thickness of the film, indicate that these films are extremely flat with a thickness variation of only ∼20 Å over a length scale of several thousand angstroms. These results show that unit‐cell control of (Sr,Ca)CuO2 growth is possible in an oxygen pressure regime in which in situ surface analysis is not possible.Keywords
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