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Title: Origin of the Inverse spin-switch behavior in manganite/cuprate/manganite trilayers.

Abstract

We studied ferromagnet/superconductor/ferromagnet trilayers based on La{sub 0.7}Ca{sub 0.3}MnO{sub 3} manganite and YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) high-T{sub c} cuprate with magnetoresistance and magnetization measurements. We find an inverse superconducting spin-switch behavior, where superconductivity is favored for parallel alignment of the magnetization in the ferromagnetic layers. We argue that this inverse superconducting spin switch originates from the transmission of spin-polarized carriers into the superconductor. In this picture, the thickness dependence of the magnetoresistance yields the spin-diffusion length in YBCO as 13 nm. A comparison of bilayers and trilayers allows ruling out the effect of the stray fields of the domain structure of the ferromagnet as the source of the inverse superconducting spin switch.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Juan de la Cierva Fellowship; Marie-Curie IRG Grant
OSTI Identifier:
965750
Report Number(s):
ANL/MSD/JA-60085
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US200920%%394
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Phys. Rev. Lett.
Additional Journal Information:
Journal Volume: 78; Journal Issue: 2008; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; LANTHANUM OXIDES; CALCIUM OXIDES; MANGANESE OXIDES; YTTRIUM OXIDES; BARIUM OXIDES; COPPER OXIDES; DOMAIN STRUCTURE; MAGNETIZATION; MAGNETORESISTANCE; SPIN; SUPERCONDUCTIVITY; ALIGNMENT

Citation Formats

Nemes, N M, Garcia-Hernandez, M, Visani, C, Garcia-Barriocanal, J, Pena, V, Arias, D, Sefrioui, Z, Leon, C, Santamaria, J, te Velthuis, S. G. E., Hoffmann, A, Materials Science Division, Inst. de Ciencia de Materiales de Madrid, and Univ. Complutense de Madrid. Origin of the Inverse spin-switch behavior in manganite/cuprate/manganite trilayers.. United States: N. p., 2008. Web. doi:10.1103/PhysRevB.78.094515.
Nemes, N M, Garcia-Hernandez, M, Visani, C, Garcia-Barriocanal, J, Pena, V, Arias, D, Sefrioui, Z, Leon, C, Santamaria, J, te Velthuis, S. G. E., Hoffmann, A, Materials Science Division, Inst. de Ciencia de Materiales de Madrid, & Univ. Complutense de Madrid. Origin of the Inverse spin-switch behavior in manganite/cuprate/manganite trilayers.. United States. https://doi.org/10.1103/PhysRevB.78.094515
Nemes, N M, Garcia-Hernandez, M, Visani, C, Garcia-Barriocanal, J, Pena, V, Arias, D, Sefrioui, Z, Leon, C, Santamaria, J, te Velthuis, S. G. E., Hoffmann, A, Materials Science Division, Inst. de Ciencia de Materiales de Madrid, and Univ. Complutense de Madrid. 2008. "Origin of the Inverse spin-switch behavior in manganite/cuprate/manganite trilayers.". United States. https://doi.org/10.1103/PhysRevB.78.094515.
@article{osti_965750,
title = {Origin of the Inverse spin-switch behavior in manganite/cuprate/manganite trilayers.},
author = {Nemes, N M and Garcia-Hernandez, M and Visani, C and Garcia-Barriocanal, J and Pena, V and Arias, D and Sefrioui, Z and Leon, C and Santamaria, J and te Velthuis, S. G. E. and Hoffmann, A and Materials Science Division and Inst. de Ciencia de Materiales de Madrid and Univ. Complutense de Madrid},
abstractNote = {We studied ferromagnet/superconductor/ferromagnet trilayers based on La{sub 0.7}Ca{sub 0.3}MnO{sub 3} manganite and YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) high-T{sub c} cuprate with magnetoresistance and magnetization measurements. We find an inverse superconducting spin-switch behavior, where superconductivity is favored for parallel alignment of the magnetization in the ferromagnetic layers. We argue that this inverse superconducting spin switch originates from the transmission of spin-polarized carriers into the superconductor. In this picture, the thickness dependence of the magnetoresistance yields the spin-diffusion length in YBCO as 13 nm. A comparison of bilayers and trilayers allows ruling out the effect of the stray fields of the domain structure of the ferromagnet as the source of the inverse superconducting spin switch.},
doi = {10.1103/PhysRevB.78.094515},
url = {https://www.osti.gov/biblio/965750}, journal = {Phys. Rev. Lett.},
issn = {0031-9007},
number = 2008,
volume = 78,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2008},
month = {Tue Jan 01 00:00:00 EST 2008}
}