Low-temperature specific heat of a random Heisenberg chain in the large- S limit
Makaleler > Tam Makale · 1997
Yazarlar: I. Avgin, D. L. Huber
Physical Review B, Uluslararası, Wos, 1997, cilt 56, ss 2320-2321
Özet
Results are presented for the low-temperature specific heat of a disordered Heisenberg chain with random $\ifmmode\pm\else\textpm\fi{}J$ interactions in the large-spin limit. The specific heat varies at ${T}^{2/3}$ with a coefficient that depends on the relative fractions of positive and negative bonds. The coefficient is calculated exactly for the equal-probability distribution. There is also a brief analysis of the destabilizing effects of an applied magnetic field.