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Conductivity and Local Structure of LaNiO3 Thin Films

Gibert, Marta
Gloter, Alexandre
Filippetti, Alessio
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Published in Advanced Materials. 2017, vol. 29, no. 18, p. 1605197
Abstract A marked conductivity enhancement is reported in 6–11 unit cell LaNiO3 thin films. A maximal conductivity is also observed in ab initio calculations for films of the same thickness. In agreement with results from state of the art scanning transmission electron microscopy, the calculations also reveal a differentiated film structure comprising characteristic surface, interior, and heterointerface structures. Based on this observation, a three‐element parallel conductor model is considered and leads to the conclusion that the conductivity enhancement for films of 6–11 unit cells, stems from the onset of intercompetition between the three local structures in the film depth.
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Research group Groupe Triscone
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FOWLIE, Jennifer et al. Conductivity and Local Structure of LaNiO3 Thin Films. In: Advanced Materials, 2017, vol. 29, n° 18, p. 1605197. doi: 10.1002/adma.201605197 https://archive-ouverte.unige.ch/unige:104189

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Deposited on : 2018-05-08

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