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 |
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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