Abstract
Specific heat measurements in a magnetic field up to 8 T have been performed on an S = 1/2 weakly coupled alternating ferromagnetic (F) and antiferromagnetic (AF) dimer chain system, (CH3)2NH 2-CuCl3. We have observed a spontaneous AF ordering and a field-induced one below and above the 1/2 magnetization plateau field range from 2 to 3.5 T, respectively. The H-T phase boundaries for the orderings are completely different from the general reentrant ones of the other quantum spin systems investigated thus far. In the plateau field range, a double-peaked structure is observed in the temperature dependence of specific heat, reflecting the coexistence of F and AF excitations.
| Original language | English |
|---|---|
| Pages (from-to) | 2917-2920 |
| Number of pages | 4 |
| Journal | journal of the physical society of japan |
| Volume | 74 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Nov 1 2005 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
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Yoshida, Y., Wada, O., Inagaki, Y., Asano, T., Takeo, K., Kawae, T., Takeda, K., & Ajiro, Y. (2005). Specific heat study of novel spin-gapped system: (CH3) 2NH2CuCl3. journal of the physical society of japan, 74(11), 2917-2920. https://doi.org/10.1143/JPSJ.74.2917