Gordon Godfrey Theoretical Seminar 2006
Unusual
magnetic correlations in layered cobaltates
Prof.
Giniyat Khaliullin
Max
Planck Institute for Solid State Physics, Stuttgart
Date
12 pm, Tuesday, 28 February, 2006
School of Physics,
Room 5
ABSTRACT:
We analyze the exchange interactions between Co-ions in a triangular
lattice of layered cobaltates. The low-energy effective Hamiltonian
supports a variety of magnetic states depending on the lattice distortion
and spin-orbit coupling. The magnetism of sodium-rich compounds Na(1-x)CoO2
will be discussed in terms of a spin-orbital polaron liquid.
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