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Tunnel magnetoresistance in La_(0.7)Ca_(0.3)MnO_(3)/PrBa_(2)Cu_(3)O_(7)/La_(0.7)Ca_(0.3)MnO_(3)

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Sefrioui, Zouhair and Cros, V. and Barthélémy, A. and Peña, V. and León Yebra, Carlos and Santamaría Sánchez-Barriga, Jacobo and Varela del Arco, María and Pennycook, S.J. (2006) Tunnel magnetoresistance in La_(0.7)Ca_(0.3)MnO_(3)/PrBa_(2)Cu_(3)O_(7)/La_(0.7)Ca_(0.3)MnO_(3). Applied physics letters, 88 (2). ISSN 0003-6951

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Official URL: http://dx.doi.org/10.1063/1.2162674


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Abstract

We report large tunneling magnetoresistance in La_(0.7)Ca_(0.3)MnO_(3) (8 nm)/PrBa_(2)Cu_(3)O_(7) (2.4 nm)/La_(0.7)Ca_(0.3)MnO_(3) (50 nm) junctions. The coherent growth of the cuprate on the manganite allows the deposition of ultrathin barriers which are continuous and flat over long lateral distances. Epitaxial strain causes the top layer to be a weaker ferromagnet without a significant decrease in the spin polarization.


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© 2006 American Institute of Physics. One of the authors Z.S. gratefully acknowledges financial support from Flores Valles. Work supported by MCYT MAT 2002-2642, CAM GR-MAT-0771/2004, UCM PR3/04- 12399, and Fundación Ramón Areces. This research was partially sponsored by the Laboratory Directed Research and Development Program of ORNL, managed by UT-Batelle, LLC, for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. The authors thank M. Bibes for fruitful discussion.

Uncontrolled Keywords:Spin polarization; Junctions; Films.
Subjects:Sciences > Physics > Electricity
Sciences > Physics > Electronics
ID Code:30588
Deposited On:03 Jun 2015 10:21
Last Modified:10 Dec 2018 14:58

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