Abstract
The field dependence of the magnetic heat capacity of (C6H11NH3)CuBr3 (CHAB), which is an ideal ferromagnetic S=(1/2) chain system with XY anisotropy, is compared with predictions based on the sine-Gordon (sG) model and with transfer-matrix calculations on a chain of classical spins. A detailed analysis of the excess heat capacity in the region 1.5
| Original language | English |
|---|---|
| Pages (from-to) | 3154-3163 |
| Number of pages | 10 |
| Journal | Physical Review B: Condensed Matter |
| Volume | 32 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1985 |