Low-temperature specific heat of a random Heisenberg chain in the large-S limit


Avgin İ. , Huber D.

PHYSICAL REVIEW B, cilt.56, ss.2320-2321, 1997 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 56 Konu: 5
  • Basım Tarihi: 1997
  • Doi Numarası: 10.1103/physrevb.56.2320
  • Dergi Adı: PHYSICAL REVIEW B
  • Sayfa Sayıları: ss.2320-2321

Özet

Results are presented for the low-temperature specific heat of a disordered Heisenberg chain with random +/-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.