Abstract
Ferromagnetism of La{sub 0.67}Sr{sub 0.33}MnO{sub 3} is extremely sensitive to external perturbations like substrate-induced strain, charge injection and chemical interactions with neighbour layers. In this paper we discuss the perturbation induced by the presence of a metallic overlayer, typically deposited for electric contacts, in the prototypical case of the Au/La{sub 0.67}Sr{sub 0.33}MnO{sub 3} interface. In particular we found a sizable decrease of the Curie temperature in thin films of La{sub 0.67}Sr{sub 0.33}MnO{sub 3} after gold capping: 65 K for 5 nm thickness of the manganite. Apart from chemical reactions at the interface, charge injection-depletion induced by the difference in the work function between Au and La{sub 0.67}Sr{sub 0.33}MnO{sub 3} could partially explain this phenomenon.
Brivio, S;
Cantoni, M;
Petti, D;
Cattoni, A;
[1]
Bertacco, R. , E-mail: riccardo.bertacco@polimi.it;
[1]
Finazzi, M;
Ciccacci, F;
[1]
Sidorenko, A;
Allodi, G;
Ghidini, M;
De Renzi, R
[2]
- L-NESS, Dipartimento di Fisica del Politecnico di Milano, via Anzani 42, 22100 Como (Italy)
- Dipartimento di Fisica Universita di Parma, Parco Area delle Scienze 7/A, 43100 Parma (Italy)
Citation Formats
Brivio, S, Cantoni, M, Petti, D, Cattoni, A, Bertacco, R. , E-mail: riccardo.bertacco@polimi.it, Finazzi, M, Ciccacci, F, Sidorenko, A, Allodi, G, Ghidini, M, and De Renzi, R.
Decrease of the Curie temperature in La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films induced by Au capping.
Netherlands: N. p.,
2007.
Web.
doi:10.1016/j.mseb.2007.07.084.
Brivio, S, Cantoni, M, Petti, D, Cattoni, A, Bertacco, R. , E-mail: riccardo.bertacco@polimi.it, Finazzi, M, Ciccacci, F, Sidorenko, A, Allodi, G, Ghidini, M, & De Renzi, R.
Decrease of the Curie temperature in La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films induced by Au capping.
Netherlands.
https://doi.org/10.1016/j.mseb.2007.07.084
Brivio, S, Cantoni, M, Petti, D, Cattoni, A, Bertacco, R. , E-mail: riccardo.bertacco@polimi.it, Finazzi, M, Ciccacci, F, Sidorenko, A, Allodi, G, Ghidini, M, and De Renzi, R.
2007.
"Decrease of the Curie temperature in La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films induced by Au capping."
Netherlands.
https://doi.org/10.1016/j.mseb.2007.07.084.
@misc{etde_21090255,
title = {Decrease of the Curie temperature in La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films induced by Au capping}
author = {Brivio, S, Cantoni, M, Petti, D, Cattoni, A, Bertacco, R. , E-mail: riccardo.bertacco@polimi.it, Finazzi, M, Ciccacci, F, Sidorenko, A, Allodi, G, Ghidini, M, and De Renzi, R}
abstractNote = {Ferromagnetism of La{sub 0.67}Sr{sub 0.33}MnO{sub 3} is extremely sensitive to external perturbations like substrate-induced strain, charge injection and chemical interactions with neighbour layers. In this paper we discuss the perturbation induced by the presence of a metallic overlayer, typically deposited for electric contacts, in the prototypical case of the Au/La{sub 0.67}Sr{sub 0.33}MnO{sub 3} interface. In particular we found a sizable decrease of the Curie temperature in thin films of La{sub 0.67}Sr{sub 0.33}MnO{sub 3} after gold capping: 65 K for 5 nm thickness of the manganite. Apart from chemical reactions at the interface, charge injection-depletion induced by the difference in the work function between Au and La{sub 0.67}Sr{sub 0.33}MnO{sub 3} could partially explain this phenomenon.}
doi = {10.1016/j.mseb.2007.07.084}
journal = []
issue = {1-3}
volume = {144}
place = {Netherlands}
year = {2007}
month = {Nov}
}
title = {Decrease of the Curie temperature in La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films induced by Au capping}
author = {Brivio, S, Cantoni, M, Petti, D, Cattoni, A, Bertacco, R. , E-mail: riccardo.bertacco@polimi.it, Finazzi, M, Ciccacci, F, Sidorenko, A, Allodi, G, Ghidini, M, and De Renzi, R}
abstractNote = {Ferromagnetism of La{sub 0.67}Sr{sub 0.33}MnO{sub 3} is extremely sensitive to external perturbations like substrate-induced strain, charge injection and chemical interactions with neighbour layers. In this paper we discuss the perturbation induced by the presence of a metallic overlayer, typically deposited for electric contacts, in the prototypical case of the Au/La{sub 0.67}Sr{sub 0.33}MnO{sub 3} interface. In particular we found a sizable decrease of the Curie temperature in thin films of La{sub 0.67}Sr{sub 0.33}MnO{sub 3} after gold capping: 65 K for 5 nm thickness of the manganite. Apart from chemical reactions at the interface, charge injection-depletion induced by the difference in the work function between Au and La{sub 0.67}Sr{sub 0.33}MnO{sub 3} could partially explain this phenomenon.}
doi = {10.1016/j.mseb.2007.07.084}
journal = []
issue = {1-3}
volume = {144}
place = {Netherlands}
year = {2007}
month = {Nov}
}