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Title: Spin dependent magnetoresistance at ferromagnet/superconductor/ferromagnet La{sub 0.7}Ca{sub 0.3}MnO{sub 3}/YBa{sub 2}Cu{sub 3}O{sub 7-delta}/La{sub 0.7}Ca{sub 0.3}MnO{sub 3} trilayers.

Abstract

We report on large magnetoresistance in ferromagnet/superconductor/ferromagnet trilayer structures made of La{sub 0.7}Ca{sub 0.3}MnO{sub 3} and YBa{sub 2}Cu{sub 3}O{sub 7}. We find that the shape and height of the magnetoresistance peaks are not modified when the relative orientation of current and magnetic field is changed from parallel to perpendicular. Furthermore, we find that the temperature shift of the resistance curves is independent of current and of the sweep rate of the magnetic field. These observations favor the view that the magnetoresistance phenomenon originates in the spin dependent transport of quasiparticles transmitted from the ferromagnetic electrodes into the superconductor, and rule out interpretations in terms of spontaneous vortices or anisotropic magnetoresistance of the ferromagnetic layers.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
940690
Report Number(s):
ANL/MSD/JA-57714
Journal ID: ISSN 1098-0121; TRN: US200824%%172
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys. Rev. B; Journal Volume: 75; Journal Issue: 2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; MAGNETORESISTANCE; FERROMAGNETIC MATERIALS; SUPERCONDUCTORS; COMPOSITE MATERIALS; LANTHANUM OXIDES; CALCIUM OXIDES; MANGANESE OXIDES; YTTRIUM OXIDES; BARIUM OXIDES; COPPER OXIDES

Citation Formats

Visani, C., Pena, V., Garcia-Barriocanal, J., Arias, D., Sefrioui, Z., Leon, C., Santamaria, J., Nemes, N. M., Garcia-Hernandez, M., Martinez, J. L., te Velthuis, S.G.E, Hoffmann, A., Materials Science Division, Univ. Complutense de Madrid, and Inst. de Ciencia de Materiales de Madrid. Spin dependent magnetoresistance at ferromagnet/superconductor/ferromagnet La{sub 0.7}Ca{sub 0.3}MnO{sub 3}/YBa{sub 2}Cu{sub 3}O{sub 7-delta}/La{sub 0.7}Ca{sub 0.3}MnO{sub 3} trilayers.. United States: N. p., 2007. Web. doi:10.1103/PhysRevB.75.054501.
Visani, C., Pena, V., Garcia-Barriocanal, J., Arias, D., Sefrioui, Z., Leon, C., Santamaria, J., Nemes, N. M., Garcia-Hernandez, M., Martinez, J. L., te Velthuis, S.G.E, Hoffmann, A., Materials Science Division, Univ. Complutense de Madrid, & Inst. de Ciencia de Materiales de Madrid. Spin dependent magnetoresistance at ferromagnet/superconductor/ferromagnet La{sub 0.7}Ca{sub 0.3}MnO{sub 3}/YBa{sub 2}Cu{sub 3}O{sub 7-delta}/La{sub 0.7}Ca{sub 0.3}MnO{sub 3} trilayers.. United States. doi:10.1103/PhysRevB.75.054501.
Visani, C., Pena, V., Garcia-Barriocanal, J., Arias, D., Sefrioui, Z., Leon, C., Santamaria, J., Nemes, N. M., Garcia-Hernandez, M., Martinez, J. L., te Velthuis, S.G.E, Hoffmann, A., Materials Science Division, Univ. Complutense de Madrid, and Inst. de Ciencia de Materiales de Madrid. Mon . "Spin dependent magnetoresistance at ferromagnet/superconductor/ferromagnet La{sub 0.7}Ca{sub 0.3}MnO{sub 3}/YBa{sub 2}Cu{sub 3}O{sub 7-delta}/La{sub 0.7}Ca{sub 0.3}MnO{sub 3} trilayers.". United States. doi:10.1103/PhysRevB.75.054501.
@article{osti_940690,
title = {Spin dependent magnetoresistance at ferromagnet/superconductor/ferromagnet La{sub 0.7}Ca{sub 0.3}MnO{sub 3}/YBa{sub 2}Cu{sub 3}O{sub 7-delta}/La{sub 0.7}Ca{sub 0.3}MnO{sub 3} trilayers.},
author = {Visani, C. and Pena, V. and Garcia-Barriocanal, J. and Arias, D. and Sefrioui, Z. and Leon, C. and Santamaria, J. and Nemes, N. M. and Garcia-Hernandez, M. and Martinez, J. L. and te Velthuis, S.G.E and Hoffmann, A. and Materials Science Division and Univ. Complutense de Madrid and Inst. de Ciencia de Materiales de Madrid},
abstractNote = {We report on large magnetoresistance in ferromagnet/superconductor/ferromagnet trilayer structures made of La{sub 0.7}Ca{sub 0.3}MnO{sub 3} and YBa{sub 2}Cu{sub 3}O{sub 7}. We find that the shape and height of the magnetoresistance peaks are not modified when the relative orientation of current and magnetic field is changed from parallel to perpendicular. Furthermore, we find that the temperature shift of the resistance curves is independent of current and of the sweep rate of the magnetic field. These observations favor the view that the magnetoresistance phenomenon originates in the spin dependent transport of quasiparticles transmitted from the ferromagnetic electrodes into the superconductor, and rule out interpretations in terms of spontaneous vortices or anisotropic magnetoresistance of the ferromagnetic layers.},
doi = {10.1103/PhysRevB.75.054501},
journal = {Phys. Rev. B},
number = 2007,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}