2 papers
cond-mat.str-el2004
Orbital Symmetry and Electron Correlation in Na_{x}CoO_2
W. B. Wu, D. J. Huang, J. Okamoto +5
Measurements of polarization-dependent soft x-ray absorption reveal that the electronic states determining the low-energy excitations of NaCoO have predominantly …
cond-mat.str-el2003
Infrared optical properties of the spin-1/2 quantum magnet
G. Caimi, L. Degiorgi, N. N. Kovaleva +2
We report results on the electrodynamic response of , a low-dimensional spin-1/2 quantum magnet that shows a spin gap formation for T= 67 . The Fano-like shape o…