Magnetic properties and atomic structure of La(2/3)Ca(1/3)MnO(3)-YBa(2)Cu(3)O(7) heterointerfaces
| Autor: | Zhang, Z. L., Kaiser, U., Soltan, S., Habermeier, H. -U., Keimer, B. |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Appl. Phys. Lett. 95, 242505 (2009) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1063/1.3274044 |
| Popis: | A heterostructure comprised of a 2.7 nm (7 unit-cell) thick layer of the metallic ferromagnet La(2/3)Ca(1/3)MnO(3) and two 50 nm thick layers of the high-temperature superconductor YBa(2)Cu(3)O(7) epitaxially grown on (100) SrTiO3 by pulsed-laser deposition was characterized by magnetization measurements and spherical-aberration-corrected high-resolution transmission electron microscopy (HRTEM). The saturation magnetization is about half of that in bulk La(2/3)Ca(1/3)MnO(3). A massive reduction of the magnetization previously inferred from sputter-deposited La(2/3)Ca(1/3)MnO(3)-YBa(2)Cu(3)O(7) heterostructures can be ruled out. HRTEM image analysis, combined with image simulation and a focus series reconstruction, revealed atomically sharp epitaxial structures with stacking sequences -(La,Ca)O-CuO2- and -BaO-MnO- at the top and bottom interface. Comment: to appear in Applied Physics Letters |
| Databáze: | arXiv |
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