Microstructure of bilayer manganite PrCa2Mn2O7 showing charge/orbital ordering
نویسندگان
چکیده
ordering Zhanbing He, He Tian, Guochu Deng, Qiang Xu, and Gustaaf Van Tendeloo Electron Microscopy for Materials Research (EMAT), University of Antwerp, Groenenborgerlaan 171, Antwerp B-2020, Belgium Laboratory for Developments and Methods, Paul Scherrer Institute, CH-5232 Villigen, Switzerland Bragg Institute, Australian Nuclear Science and Technology Organization, New Illawarra Road, Lucas Heights, NSW 2234, Australia National Centre for High Resolution Electron Microscopy, Technical University Delft, Lorentzweg 1, 2628 CJ Delft, The Netherlands
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Orbital order has been proposed theoretically for more than half a century, and has subsequently been observed in a huge range of materials. Charge ordering is generally accompanied by a transition from a metal to an insulator. In manganites, colossal magnetoresistance (CMR) is associated with competition between charge and orbital antiferromagnetic insulating phases and ferromagnetic metallic ...
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Nanoscale self-organization of electrons is ubiquitously observed in correlated electron systems such as complex oxides of transition metals. The phenomenon of charge ordering (CO) or the formation of charge stripes, as observed for layered-structure cuprates and nickelates, is one such example. Among them, CO in manganites is closely tied to the orbital degree of freedom of 3d electrons, leadi...
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