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cond-mat.stat-mech2006
On low-temperature structural phase transitions
A. Cano, A. P. Levanyuk
We comment on zero- and low-temperature structural phase transitions, expecting that these comments might be relevant not only for this structural case. We first consider a textboo…
cond-mat.stat-mech2006
Universal features of the defect-induced damping of lattice vibrations
A. Cano, A. P. Levanyuk, S. A. Minyukov
It is shown that any defect gives an Ohmic contribution to the damping of any normal mode of the crystal lattice with nonzero wavevector which does not vanish at zero temperature.…