The high-pressure phase of (VO)2P2O7 comprises a unique kind of spin-1/2 Heisenberg alternating antiferromagnetic chain, in contrast with the ambient pressure phase containing two crystallographically different chains. Magnetic susceptibility and high-field magnetization data showed the presence of a single spin gap of 23 (magnetization) ∼ 27 (susceptibility) K, not double as observed for the ambient pressure phase. This result shows that the two kinds of chains of the ambient pressure phase have single, different spin gaps.
|Number of pages||4|
|Journal||Acta Physica Polonica A|
|Publication status||Published - 2000 Jan|
|Event||The European Conference: Physics of Magnetism '99 - Poznan, Poland|
Duration: 1999 Jun 21 → 1999 Jun 25
ASJC Scopus subject areas
- Physics and Astronomy(all)