Orbital degeneracy removed by charge order in triangular antiferromagnet AgNiO2.

Orbital degeneracy removed by charge order in triangular antiferromagnet AgNiO2.

We report a high-resolution neutron diffraction study on the orbitally degenerate spin-1/2 hexagonal metallic antiferromagnet AgNiO2. A structural transition to a tripled unit cell with expanded and contracted NiO6 octahedra indicates sqrt[3]xsqrt[3] charge order on the Ni triangular lattice. This s...

Полное описание

Библиографические подробности
Главные авторы:	Wawrzyńska, E, Coldea, R, Wheeler, E, Mazin, I, Johannes, MD, Sörgel, T, Jansen, M, Ibberson, R, Radaelli, P
Формат:	Journal article
Язык:	English
Опубликовано:	2007

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