Abstract
We have studied the dynamic spin structure factor as well as the static one in the ground state of the one-dimensional S = 1/2 Heisenberg antiferromagnet with alternating nearest neighbor and competing next nearest neighbor couplings, under a uniform magnetic field. They show an anomalous behavior at a wavevector characterized by the magnetization. We have discussed further the effect of the spin-phonon couplings on the dynamic spin structure factor, in order to demonstrate the difference from what are obtained for the simple dimerized Hamiltonian.
| Original language | English |
|---|---|
| Pages (from-to) | 1133-1135 |
| Number of pages | 3 |
| Journal | Journal of Physics and Chemistry of Solids |
| Volume | 60 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 1999 |
| Externally published | Yes |
| Event | Proceedings of the 1998 7th ISSP International Symposium Frontiers in Neutron Scattering Research (ISSP7) - Tokyo, Jpn Duration: Nov 24 1998 → Nov 27 1998 |
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics