Coexistence of superconductivity and ferromagnetism in two dimensions.
| Autor: | Dikin DA; Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA., Mehta M, Bark CW, Folkman CM, Eom CB, Chandrasekhar V |
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| Jazyk: | angličtina |
| Zdroj: | Physical review letters [Phys Rev Lett] 2011 Jul 29; Vol. 107 (5), pp. 056802. Date of Electronic Publication: 2011 Jul 25. |
| DOI: | 10.1103/PhysRevLett.107.056802 |
| Abstrakt: | Ferromagnetism is usually considered to be incompatible with conventional superconductivity, as it destroys the singlet correlations responsible for the pairing interaction. Superconductivity and ferromagnetism are known to coexist in only a few bulk rare-earth materials. Here we report evidence for their coexistence in a two-dimensional system: the interface between two bulk insulators, LaAlO(3) (LAO) and SrTiO(3) (STO), a system that has been studied intensively recently. Magnetoresistance, Hall, and electric-field dependence measurements suggest that there are two distinct bands of charge carriers that contribute to the interface conductivity. The sensitivity of properties of the interface to an electric field makes this a fascinating system for the study of the interplay between superconductivity and magnetism. (© 2011 American Physical Society) |
| Databáze: | MEDLINE |
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