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arXiv · 0706.2688

Proximity effects induced by a gold layer on La0.67Sr0.33MnO3 thin films

R. Bertacco·S. Brivio·M. Cantoni·A. Cattoni·D. Petti·M. Finazzi·F. Ciccacci·A. A. Sidorenko·M. Ghidini·G. Allodi·R. De Renzi
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Abstract

We report about La0.67Sr0.33MnO3 single crystal manganite thin films in interaction with a gold capping layer. With respect to uncoated manganite layers of the same thickness, Au-capped 4 nm-thick manganite films reveal a dramatic reduction (about 185 K) of the Curie temperature TC and a lower saturation low-temperature magnetization M0. A sizeable TC reduction (about 60 K) is observed even when an inert SrTiO3 layer is inserted between the gold film and the 4 nm-thick manganite layer, suggesting that this effect might have an electrostatic origin.

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R. Bertacco, S. Brivio, M. Cantoni, A. Cattoni, D. Petti, M. Finazzi, F. Ciccacci, A. A. Sidorenko, M. Ghidini, G. Allodi, R. De Renzi. 2007-06-19. Proximity effects induced by a gold layer on La0.67Sr0.33MnO3 thin films. https://doi.org/10.1063/1.2778353

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