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Non-ferromagnetic Insulating Interface Region in La0.14Pr0.56Sr0.3MnO0.3/SrTiO3 and La0.7Ca0.3MnO3/Gd0.7Ca0.3MnO3 Multilayers |
WANG Xin;LIU Da-Meng;LIAN Gui-Jun;XIONG Guang-Cheng |
Department of Physics and State Key Laboratory of Mesoscopic Physics, Peking University, Beijing 100871 |
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Cite this article: |
WANG Xin, LIU Da-Meng, LIAN Gui-Jun et al 2004 Chin. Phys. Lett. 21 1808-1810 |
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Abstract La0.14Pr0.56Sr0.3MnO3/SrTiO3 and La0.7Ca0.3MnO3/Gd0.7Ca0.3MnO3 multilayers have been fabricated by using pulsed laser deposition. The insulator--metal transition temperatures of the multilayers decrease with the decreasing thickness of the ferromagnetic layers. It is confirmed from the experiment and analysis that a non-ferromagnetic insulating region exists near the interface, which could not be attributed to the roughness of the growth surfaces and disorder of the ferromagnetic layers.
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Keywords:
75.30.Vn 75.70.Ak
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Published: 01 September 2004
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