Strain-induced local distortions and orbital ordering in Nd0.5Sr0.5MnO3 manganite films
نویسندگان
چکیده
Q. Qian, T. A. Tyson, C.-C. Kao, W. Prellier, J. Bai, A. Biswas, and R. L. Greene Department of Physics, New Jersey Institute of Technology, Newark, New Jersey 07102 Brookhaven National Laboratory, Upton, New York 11973 Center for Superconductivity Research, University of Maryland, College Park, Maryland 20742 Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 ~Received 23 January 2001; published 24 May 2001!
منابع مشابه
تحلیل پراکندگی پرتوهای X تشدید یافته در لبه K ی Mn در Nd./5Sr./5MnO3
Studies of phenomena such as charge, orbital and spin ordering in manganite has attracted much interest in recent years. These studies have been possible from an experimental point of view by the third generation synchrotron sources. X-ray with high flux density, tunable energy and polarization can be produced in synchrotron sources. Experiments have shown a resonant in peak intensity originat...
متن کاملInfluence of strain on the atomic and electronic structure of manganite films
A study of the long-range, local and electronic structure of Nd0.5Sr0.5MnO3 films of varying thickness between 500 and 2000 Å has been performed. Local structure measurements at the Sr K-edge reveal a reduction of the Mn–O–Mn bond angles in films below 1000 Å. Spin-polarized measurements reveal splitting of the Mn 3d eg state in the strained region of the films and are consistent with a two-lay...
متن کاملIncreased Curie Temperature Induced by Orbital Ordering in La0.67Sr0.33MnO3/BaTiO3 Superlattices
Recent theoretical studies indicated that the Curie temperature of perovskite manganite thin films can be increased by more than an order of magnitude by applying appropriate interfacial strain to control orbital ordering. In this work, we demonstrate that the regular intercalation of BaTiO3 layers between La0.67Sr0.33MnO3 layers effectively enhances ferromagnetic order and increases the Curie ...
متن کاملStrain selection of charge and orbital ordering patterns in half-doped manganites
Perovskite manganites of chemical formula Ln12xAkxMnO3 ~Ln is a lanthanide rare earth such as La or Pr; Ak is a divalent alkali such as Sr or Ca! present a complex phase diagram associated with the interplay of charge, spin, orbital, and lattice degrees of freedom. Charge and orbitally ordered phases appear in wide parameter ranges, for example, in La12xCaxMnO3 for x>0.5, and in Pr12xCaxMnO3 fo...
متن کاملOxygen-driven anisotropic transport in ultra-thin manganite films
Transition metal oxides have a range of unique properties due to coupling of charge, spin, orbital and lattice degrees of freedom and nearly degenerate multiple ground states. These properties make them interesting for applications and for fundamental investigations. Here we report a new phase with abnormal transport anisotropy in La(0.7)Sr(0.3)MnO3 ultra-thin films under large tensile strain. ...
متن کامل