Paramagnetic effect tuned by magnetic pinning in YBa 2 Cu 3 O 7−δ /La 0.67 Sr 0.33 MnO 3 heterostructures
| Autor: | HW(重点实验室）) Wang, CZ Chen, XM(重点实验室）) Xie, Y. M. Lu, Lin Peng, Chuanbing Cai, Z. Y. Liu |
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| Rok vydání: | 2010 |
| Předmět: |
High-temperature superconductivity
Materials science Condensed matter physics General Physics and Astronomy Flux Heterojunction Manganite law.invention Condensed Matter::Materials Science Paramagnetism Magnetization Ferromagnetism law Condensed Matter::Superconductivity Antiferromagnetism Condensed Matter::Strongly Correlated Electrons |
| Zdroj: | EPL (Europhysics Letters). 89:37005 |
| ISSN: | 1286-4854 0295-5075 |
| DOI: | 10.1209/0295-5075/89/37005 |
| Popis: | In the present heterostructure of YBa2Cu3O7−δ/La0.67Sr0.33MnO3 (YBCO/LSMO), a paramagnetic moment is observed, increasing monotonically with enhancing applied-field strength during the field-cooled (FC) magnetization process. Such a paramagnetic effect, however, emerges only in those samples where manganite layers are magnetically inhomogeneous, probably arising from the flux compression in the FC process. It is supposed that the flux compression occurs as a result of the strong magnetic pinning, caused by the stress-induced ferromagnetic/antiferromagnetic (FM/AFM) phase separation in the constituent layer of LSMO. |
| Databáze: | OpenAIRE |
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