3 papers
cond-mat.str-el2004
Nuclear Magnetic Resonance as a probe of nanometre-size orbital textures in magnetic transition metal oxides
G. Papavassiliou, M. Pissas, M. Belesi +7
The study of strong electron correlations in transition metal oxides with modern microscopy and diffraction techniques unveiled a fascinating world of nanosize textures in the spin…
cond-mat.supr-con2001
Surface barrier and bulk pinning in MgB superconductor
M. Pissas, E. Moraitakis, D. Stamopoulos +3
We present a modified method of preparation of the new superconductor MgB. The polycrystalline samples were characterized using x-ray and magnetic measurements. The surface bar…
cond-mat.str-el2000
Phase separation and the possibility of orbital liquid states in CMR manganites. A 139La NMR study
M. Belesi, G. Papavassiliou, M. Fardis +2
139La NMR spin-lattice relaxation rate 1/T1 and rf enhancement experiments provide evidence that the low temperature regime of the ferromagnetic (FM) phase of La1-xCaxMnO3 segregat…