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cond-mat.stat-mech2007
A glass-like behavior in the low-temperature specific heat is a natural property of any real crystal
A. Cano, A. P. Levanyuk, S. A. Minyukov
We provide a rigorous calculation of the free energy of a non-metallic crystal containing a small concentration of defects. The low-temperature leading contribution is found to be…
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.…