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Paramagnetic meissner effect in YBa_(2)Cu_(3)O_(7)/La_(0.7)Ca_(0.3)MnO_(3) superlattices

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López de la Torre, M. A. and Peña, V. and Sefrioui, Zouhair and Arias Serna, Diego and León Yebra, Carlos and Santamaría Sánchez-Barriga, Jacobo and Martínez, J. L. (2006) Paramagnetic meissner effect in YBa_(2)Cu_(3)O_(7)/La_(0.7)Ca_(0.3)MnO_(3) superlattices. Physical review B, 73 (5). ISSN 1098-0121

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Official URL: http://dx.doi.org/10.1103/PhysRevB.73.052503


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http://journals.aps.org/Publisher


Abstract

We report the observation of a paramagnetic contribution to the field cooled magnetization that develops below the superconducting transition temperature T_(c) in measurements performed on YBa_(2)Cu_(3)O_(7)/La_(0.7)Ca_(0.3)MnO_(3) superlattices. The effect has been detected only for samples whose manganite layers are magnetically granular. We discuss our observation of this paramagnetic Meissner effect (Wohlleben effect) in terms of an inhomogeneous superconducting state at the interface with the magnetically granular manganite layers.


Item Type:Article
Additional Information:

© 2006 The American Physical Society. Work at Universidad Complutense de Madrid was supported by MCYT MAT 2005-06024-C02-02, CAM GRMAT-0771/2004, UCM PR3/04-12399 and Fundación Ramón Areces. M. A. López de la Torre acknowledges financial support through JCCM projects PBI-02-015 and PAI-05- 013. We thank A. Quijano and J. J Palacios for helpful discussions.

Uncontrolled Keywords:High-temperature superconductors; Disks; Nb; Manganites.
Subjects:Sciences > Physics > Electricity
Sciences > Physics > Electronics
ID Code:30587
Deposited On:03 Jun 2015 09:26
Last Modified:10 Dec 2018 14:58

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