NEGATIVE-LIGHT-FLUX SPECTROSCOPY OF ORIENTED FILMS gan Boldyrev, N, Burlakov, V, Golovashkin, A, Zhizhin, G, Mitko, A, Krasnosvobodtsev, S, Pechen, E, Khadzhiiskii, Y

VIBRATIONAL-SPECTRA OF HIGH-TC SUPERCONDUCTORS YBA2CU3OX EVIDENCE OF INTERBAND HYBRIDIZATION gan Burlakov, V, Boldyrev, N, Firsov, E, Kraiskaya, K, Krasnosvobodtzev, S, Mitko, A, Pechen, E, Hadzhiysky, Y

SPECTROSCOPY OF ENERGY-GAP IN CERAMICS AND ORIENTED FILMS OF YBA2CU3O7 IN THE REGIME OF NEGATIVE LIGHT-FLUXES gan Boldyrev, N, Burlakov, V, Golovashkin, A, Khadzhiiskii, Y, Kraiskaya, K, Krasnosvobodtsev, S, Lerner, I, Mitko, A, Pechen, E, Zhizhin, G