Differential conductance of the ferromagnet/superconductor interface of DyBa2Cu3O7/La2/3Ba1/3MnO3 heterostructures
| Autor: | Allen M Goldman, K. R. Nikolaev, P. A. Kraus, V. A. Vas'ko, V. A. Larkin |
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| Rok vydání: | 1998 |
| Předmět: |
Superconductivity
High-temperature superconductivity Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Spin polarization Heterojunction Condensed Matter::Mesoscopic Systems and Quantum Hall Effect law.invention Andreev reflection Magnetic field Condensed Matter::Materials Science Amplitude Ferromagnetism law Condensed Matter::Superconductivity Condensed Matter::Strongly Correlated Electrons |
| Zdroj: | Applied Physics Letters. 73:844-846 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.122020 |
| Popis: | The voltage bias, temperature, and magnetic field dependence of the differential conductance of the interface between a half-metallic ferromagnet and a high-Tc superconductor have been studied in DyBa2Cu3O7/La2/3Ba1/3MnO3 heterostructures. Below the superconducting transition the differential conductance exhibits a dip at zero bias whose amplitude is a decreasing function of temperature and/or magnetic field. These results are interpreted qualitatively using a picture based on the suppression of Andreev reflection as a consequence of the high spin polarization of the carriers in the half-metallic ferromagnet. |
| Databáze: | OpenAIRE |
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