Thursd. seminar

[Cond.Matt. & Stat.Mech.Section]

SEMINAR on   Disorder and strong electron correlations



Thursday, 15 April      -  11:00 a.m.



Luigi Stasi Seminar Room,  Leonardo Building - first floor





Alexander NERSESYAN     (Andronikashvili Institute of Physics, Tbilisi  
& I.C.T.P. )



"Quantum criticalities in vanadium chains:   A toy 1D spin-orbital  
model"



Abstract



In certain vanadium oxides, the transition-metal atoms form weakly  
coupled chains or ladders.  We propose a relevant 1D toy model,  
discuss the interplay between the spin and orbital degrees of freedom  
in this system, and analyze massive phases and quantum criticalities  
induced by the local spin-orbit coupling.