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Magnetic memory based on La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7)/La_(0.7)Ca_(0.3)MnO_(3) ferromagnet/superconductor hybrid structures



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Nemes, Norbert Marcel y Visani, C. y León Yebra, Carlos y García Hernández, M. y Simon, F. y Fehér, T. y te Velthuis, S. G. E. y Hoffmann, A. y Santamaria Sánchez-Barriga, Jacobo (2010) Magnetic memory based on La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7)/La_(0.7)Ca_(0.3)MnO_(3) ferromagnet/superconductor hybrid structures. Applied physics letters, 97 (3). ISSN 0003-6951

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URL Oficial: http://dx.doi.org/10.1063/1.3464960

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We report a memory concept utilizing ferromagnet/superconductor/ferromagnet La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7)/La_(0.7)Ca_(0.3)MnO_(3) thin film hybrid structures. The orientation of the magnetic field with respect to the ferromagnetic easy axis has a strong effect on superconductivity as indicated by a strong variation in the magnetoresistance MR. MR can be controlled by rotating a small magnetic field applied in the plane of the film in a way that is determined by the in-plane biaxial magnetic anisotropy. The proposed memory device has the advantages of superconducting detection elements fast response and low dissipation, small 100–150 Oe writing fields, and resistance read-out without need for applied field.

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© 2010 American Institute of Physics. We thank A. Goldman for fruitful discussions within the framework of the joint U.S.-Spain NSF Materials World Network Grant No. 709584. Work was supported by the U.S. Department of Energy, Basic Energy Science under Contract Nos. DE-AC02-06CH11357 and DE-AC02NA25396, by Spanish MICINN under Contracts “Ramon y Cajal,” Grant Nos. MAT2008-06517 and CONSOLIDER INGENIO 2010 CSD2009-00013 IMAGINE, by CAM under PHAMA Grant No. S2009/Mat-1756, and by OTKA Grant Nos. K68807 and PF63954 and the “Bolyai” program of the Hungarian Academy of Sciences.

Palabras clave:Enhancement.
Materias:Ciencias > Física > Electricidad
Ciencias > Física > Electrónica
Código ID:30316
Depositado:26 May 2015 09:26
Última Modificación:26 May 2015 09:26

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