Abstract
We study numerically the magnetization process of the S = 1/2 antiferromagnetic chain with spin-lattice coupling, which modifies the exchange coupling constants. It is shown by diagonalizing the Hamiltonian of the finite-size system with an open boundary condition that, in zero field, the ground state is a singlet dimer state, which is stabilized by the lattice dimerization, while, in relatively high fields, the system becomes magnetized in such a way that the magnetization appears as a domain wall between singlet dimers relaxing the lattice dimerization near the wall. The result is discussed in connection with the experimental result of the spin-Peierls system, CuGeO3.
| Original language | English |
|---|---|
| Pages (from-to) | 250-253 |
| Number of pages | 4 |
| Journal | Physica B: Condensed Matter |
| Volume | 246-247 |
| DOIs | |
| Publication status | Published - May 29 1998 |
Keywords
- Incommensurate state
- One-dimensional antiferromagnet
- Singlet dimer
- Spin-Peierls system
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
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Cite this
Harada, I., & Mori, S. (1998). Spin-Peierls states in high magnetic fields. Physica B: Condensed Matter, 246-247, 250-253. https://doi.org/10.1016/S0921-4526(97)00908-3