Magnetic tunnel junctions using LaSrMnO ferromagnetic electrodes and PbZrTiO3 piezoelectric barrier
| Autor: | R. B. Konda, Rajeh Mundle, Messaoud Bahoura, O. Yasar, Aswini K. Pradhan, Frances Williams |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Fabrication Condensed matter physics Magnetoresistance Mechanical Engineering Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Ferroelectricity Piezoelectricity Condensed Matter::Materials Science Hysteresis Ferromagnetism Mechanics of Materials Condensed Matter::Superconductivity General Materials Science Polarization (electrochemistry) Quantum tunnelling |
| Zdroj: | Journal of Materials Research. 24:3065-3072 |
| ISSN: | 2044-5326 0884-2914 |
| Popis: | We report on the fabrication and tunneling characteristics of pulsed-laser deposited LaSrMnO (LSMO)/PbZrTiO(PZT)/LSMO/SrTiO3 magnetic tunnel junctions. The trilayer films show magnetic onset at about 360 K with ferromagnetic hysteresis and uniaxial magnetic behavior at room temperature. The microscopic studies show that the effective barrier thickness is reduced due to the presence of defects in the barrier region. Tunneling magnetoresistance measurements were performed on several samples. Our results suggest that the asymmetric deformation of the barrier potential profile induced by the ferroelectric polarization of PZT influences the tunneling characteristics and can be used for electrically controlled readout in quantum computing schemes. |
| Databáze: | OpenAIRE |
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