Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/19938
Title: Anisotropic-strain-induced monoclinic distortion and robust charge-ordering in ultrathin Pr0.5Sr0.5MnO3 films
Authors: Yin, Z
Huang, Z
Gao, G
Wu, W
Wang, G
Wang, Y 
Issue Date: 2009
Publisher: Institute of Physics Publishing
Source: Journal of physics. D, Applied physics, 2009, v. 42, no. 6, 62004 How to cite?
Journal: Journal of physics. D, Applied physics 
Abstract: Ultrathin Pr0.5Sr0.5MnO3 films 4-12 nm thick were grown on (LaAlO3)0.3(Sr2AlTaO 6)0.7(1 1 0) substrates and their thickness-dependent properties were probed. Using high-resolution off-specular x-ray reciprocal space mapping on (1 3 0), (3 1 0), (2 2 2) and reflections, we clearly show that these films have a single-crystalline and a single-domain-like structure, suffering a monoclinic distortion (MA) with the unique axis b m along [-1 1 0] due to the in-plane anisotropic strain. With increasing film thickness, while the paramagnetic-ferromagnetic transition temperature increases, the antiferromagnetic charge-orbital ordering (COO) temperature decreases. More strikingly, the ultrathin films show a much more robust COO ground state than in the bulk or thick films, with the melting field higher than 14 T for the 4 nm films.
URI: http://hdl.handle.net/10397/19938
ISSN: 0022-3727
EISSN: 1361-6463
DOI: 10.1088/0022-3727/42/6/062004
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