### Abstract

We study, by means of the quantum transfer matrix method, the finite-temperature behavior of the S = 1/2 antiferromagnetic chain with nearest neighbor and competing next nearest neighbor interactions, which is a model for the spin-Peierls material, CuGeO_{3}. In particular, the static spin structure factor is found to display an interesting phenomenon as a consequence of the competition: a characteristic wave number for the maximum value of the structure factor takes a commensurate or an incommensurate value, depending on temperature. The boundary, called a Lifshitz temperature, can be found in this material. We discuss such behavior in connection with the experimental result of the neutron scattering in CuGeO_{3} above the spin-Peierls transition temperature.

Original language | English |
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Pages (from-to) | 1105-1107 |

Number of pages | 3 |

Journal | Journal of Physics and Chemistry of Solids |

Volume | 60 |

Issue number | 8 |

DOIs | |

Publication status | Published - Sep 1999 |

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### ASJC Scopus subject areas

- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics

### Cite this

*Journal of Physics and Chemistry of Solids*,

*60*(8), 1105-1107. https://doi.org/10.1016/S0022-3697(99)00061-X

**Static spin structure factor of CuGeO3 above spin-Peierls transition temperature.** / Harada, I.; Aoyama, Y.

Research output: Contribution to journal › Article

*Journal of Physics and Chemistry of Solids*, vol. 60, no. 8, pp. 1105-1107. https://doi.org/10.1016/S0022-3697(99)00061-X

}

TY - JOUR

T1 - Static spin structure factor of CuGeO3 above spin-Peierls transition temperature

AU - Harada, I.

AU - Aoyama, Y.

PY - 1999/9

Y1 - 1999/9

N2 - We study, by means of the quantum transfer matrix method, the finite-temperature behavior of the S = 1/2 antiferromagnetic chain with nearest neighbor and competing next nearest neighbor interactions, which is a model for the spin-Peierls material, CuGeO3. In particular, the static spin structure factor is found to display an interesting phenomenon as a consequence of the competition: a characteristic wave number for the maximum value of the structure factor takes a commensurate or an incommensurate value, depending on temperature. The boundary, called a Lifshitz temperature, can be found in this material. We discuss such behavior in connection with the experimental result of the neutron scattering in CuGeO3 above the spin-Peierls transition temperature.

AB - We study, by means of the quantum transfer matrix method, the finite-temperature behavior of the S = 1/2 antiferromagnetic chain with nearest neighbor and competing next nearest neighbor interactions, which is a model for the spin-Peierls material, CuGeO3. In particular, the static spin structure factor is found to display an interesting phenomenon as a consequence of the competition: a characteristic wave number for the maximum value of the structure factor takes a commensurate or an incommensurate value, depending on temperature. The boundary, called a Lifshitz temperature, can be found in this material. We discuss such behavior in connection with the experimental result of the neutron scattering in CuGeO3 above the spin-Peierls transition temperature.

UR - http://www.scopus.com/inward/record.url?scp=0032590607&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032590607&partnerID=8YFLogxK

U2 - 10.1016/S0022-3697(99)00061-X

DO - 10.1016/S0022-3697(99)00061-X

M3 - Article

AN - SCOPUS:0032590607

VL - 60

SP - 1105

EP - 1107

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

IS - 8

ER -