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Abstract:
We have studied the magnetic properties and the underlying type of orbital ordering in the layered hybrid organic-inorganic compound (C6H5CH2CH2NH3)(2)CuCl4 by using ac-magnetic susceptibility and polarization-dependent soft-x-ray absorption spectroscopy at the Cu-L-2 and Cu-L-3 edges. We have established that the compound has a long-range ferromagnetic ordering both in plane and out of plane and we found from the analysis of the absorption spectra that the orbital ordering of the Cu2+ holes involves the cross-type d(x2-z2)/d(y2-z2) arrangement which is different from the d(x2-y2) arrangement found in the parent compounds of the high-T-c cuprate superconductors.
