منابع مشابه
The self-organised phases of manganites
Self-organisation requires a multi-component system. In turn, a multicomponent system requires that there exist conditions in which more than one component is robust enough to survive. This is the case in the manganites because the free energies of surprisingly dissimilar competing states can be similar — even in continuous systems that are chemically homogeneous. Here we describe the basic phy...
متن کاملMagnetic Phases of Rare Earth Hexagonal Manganites
We describe the magnetic phases of hexagonal rare earth manganites RMnO3 using Landau theory. A minimal model based on four one-dimensional magnetic order parameters is developed.
متن کاملSelf - organised music
Self-organisation, as manifest, for example, by swarms, flock, herds and other collectives, is a powerful natural force, capable of generating large and sustained structures. Yet the individuals who participate in these social groups may not even be aware of the structures that they are creating. Almost certainly, these structures emerge through the application of simple, local interactions. Im...
متن کاملUnveiling new magnetic phases of undoped and doped manganites.
Novel ground-state spin structures in undoped and lightly doped manganites are investigated based on the orbital-degenerate double-exchange model, via mean-field and numerical techniques. In undoped manganites, a new antiferromagnetic (AFM) state, called the E-type phase, is found adjacent in parameter space to the A-type AFM phase. Its structure is in agreement with recent experimental results...
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ژورنال
عنوان ژورنال: Solid State Communications
سال: 2001
ISSN: 0038-1098
DOI: 10.1016/s0038-1098(01)00112-0