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cond-mat1998★ 4 cited
The spin-Peierls instability in spin 1/2 XY chain in the non adiabatic limit
Shreekantha Sil
The spin-Peierls instability in spin 1/2 XY chain coupled to dispersionless phonons of frequency has been studied in the nonadiabatic limit. We have chosen the Lang-Firsov vari…
cond-mat1993★ 12 cited
Extended electronic states in disordered 1-d lattices: an example
S. Sil, S. N. Karmakar, R. K. Moitra
We discuss a very simple model of a 1-d disordered lattice, in which {\em all} the electronic eigenstates are extended. The nature of these states is examined from several viewpoin…