B. Ruzicka et al., Optical evidence for dimensionality crossover: the case of ladder systems and organic Bechgaard salts, PHYSICA C, 341, 2000, pp. 359-362
We compare our optical data collected in two families of low dimensional co
rrelated electron systems: the ladders and the organic Bechgaard salts. Our
data display a remarkable optical anisotropy between the spectra along the
three crystallographic axes, indicative of the low dimensionality in the e
lectronic band structure. Moreover, we optically identify a dimensionality
crossover, induced by Ca-doping in the ladders and by chemical pressure in
the Bechgaard salts.