RT Journal Article
T1 Interface magnetism in La0.7Ca0.3MnO3/PrBa2Cu3O7 epitaxial heterostructures
A1 Cuéllar Jiménez, Fabian Andrés
A1 Hernández Martín, David
A1 Tornos Castillo, Javier
A1 Gallego Toledo, Fernando
A1 Orfila Rodríguez, Gloria
A1 Rivera Calzada, Alberto Carlos
A1 Sefrioui Khamali, Zouhair
A1 León Yebra, Carlos
A1 Santamaría Sánchez-Barriga, Jacobo
AB All oxide magnetic tunnel junctions based on epitaxial La0.7Ca0.3MnO3 (LCMO)(8nm)/PrBa2Cu3O7 (PBCO) (3-8nm)/LCMO(25-50nm) heterostructures grown on (100) SrTiO3 are examined. Manganite electrodes show large (bulk-like) magnetic moments and exhibit different magnetic anisotropies with different easy axes directions. A form of low dimensional magnetism is induced at the interfaces by the superexchange interaction across the reconstructed bonds. It acts as an exchange spring, driving ferromagnetic coupling between the electrodes. Resistance versus magnetic field loops demonstrate that the interfacial coupling strength depends on electric field through its effect on electronic reconstruction and orbital hierarchy at the interface. The electrically controlled magnetic coupling between the magnetic moments of the electrodes signals a new path toward low dissipation spintronics.
PB Wiley
SN 1862-6300
YR 2018
FD 2018-07-24
LK https://hdl.handle.net/20.500.14352/105808
UL https://hdl.handle.net/20.500.14352/105808
LA eng
NO Phys. Status Solidi A 2018, 1800265
NO Ministerio de Economía y Competitividad (España)
NO Comunidad de Madrid
DS Docta Complutense
RD 6 abr 2025