INTERPLAY OF CHARGE, ORBITAL AND MAGNETIC ORDER IN Pr{sub 1{minus}x}Ca{sub x}MnO{sub 3}
The authors report resonant x-ray scattering studies of charge and orbital order in Pr{sub 1{minus}x}Ca{sub x}MnO{sub 3} with x = 0.4 and 0.5. Below the ordering temperature, T{sub O} = 245 K, the charge and orbital order intensities follow the same temperature dependence, including an increase at the antiferromagnetic ordering temperature, T{sub N}. High resolution measurements reveal, however, that long range orbital order is never achieved. Rather, an orbital domain state is formed. Above T{sub O}, the charge order fluctuations are more highly correlated than the orbital fluctuations. Similar phenomenology is observed in a magnetic field. They conclude that the charge order drives the orbital order at the transition.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 755054
- Report Number(s):
- BNL-67340; KC0202010; R&D Project: PO011; KC0202010; TRN: US0005137
- Resource Relation:
- Conference: MATERIALS RESEARCH SOCIETY 1999 FALL MEETING, BOSTON, MA (US), 11/29/1999--12/03/1999; Other Information: PBD: 29 Nov 1999
- Country of Publication:
- United States
- Language:
- English
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