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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…
cond-mat.str-el2003
Optical evidence for a spin-filter effect in the charge transport of
A. Perucchi, G. Caimi, H. R. Ott +3
We have measured the optical reflectivity of as a function of temperature between 1.5 and 300 and in external magnetic fields up to 7 . The sl…