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 |
| Publication status | Published - May 29 1998 |
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Keywords
- Incommensurate state
- One-dimensional antiferromagnet
- Singlet dimer
- Spin-Peierls system
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
Cite this
Spin-Peierls states in high magnetic fields. / Harada, I.; Mori, S.
In: Physica B: Condensed Matter, Vol. 246-247, 29.05.1998, p. 250-253.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Spin-Peierls states in high magnetic fields
AU - Harada, I.
AU - Mori, S.
PY - 1998/5/29
Y1 - 1998/5/29
N2 - 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.
AB - 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.
KW - Incommensurate state
KW - One-dimensional antiferromagnet
KW - Singlet dimer
KW - Spin-Peierls system
UR - http://www.scopus.com/inward/record.url?scp=0032066561&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032066561&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0032066561
VL - 246-247
SP - 250
EP - 253
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
ER -