Dispersion of the Γ (1) 6 -Γ (2) 6 Nd crystal field excitation in Nd 2 CuO 4 Henggeler, W. ; Chattopadhyay, T. ; Roessli, B. ; Zhigunov, D. I. ; Barilo, S. N. ; Furrer, A. Abstract Publication: Zeitschrift fur Physik B Condensed Matter Pub Date: March 1996 DOI: 10.1007/s002570050063 Bibcode: 1996ZPhyB..99..465H