Spin-polarized quasiparticle injection effect in MOCVD-grown YBa2Cu3O7/SrTiO3/La1−xSrxMnO3 heterostructures
| Autor: | V. Kubilius, A. Abrutis, J.P. Sénateur, B. Vengalis, Valentina Plausinaitiene, Z. Saltyte, R. Butkute |
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| Rok vydání: | 2001 |
| Předmět: |
Materials science
business.industry Supercurrent Energy Engineering and Power Technology Condensed Matter Physics Electronic Optical and Magnetic Materials Barrier layer Crystallinity Tunnel effect Etching (microfabrication) Optoelectronics Metalorganic vapour phase epitaxy Electrical and Electronic Engineering business Layer (electronics) Single crystal |
| Zdroj: | Physica C: Superconductivity. 351:13-16 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/s0921-4534(00)01681-6 |
| Popis: | Metal oxide heterostructures consisting of the ferromagnetic La1−xSrxMnO3 (x≈0.3) underlayer, thin (d≅5–10 nm) SrTiO3 barrier layer and YBa2Cu3O7 cap layer were grown on single crystal LaAlO3 (1 0 0) substrates at 825°C under oxygen pressure of about 200 Pa by single source pulsed injection MOCVD method. The technological conditions were optimized in order to improve crystallinity and surface quality of the constituent layers. Wet etching was applied to form tape-like superconducting films for investigation of both longitudinal and transverse electrical transport in the heterostructures. Significant suppression of supercurrent has been found by injecting tunneling spin-polarized current from the underlying FM layer. |
| Databáze: | OpenAIRE |
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