Magnetic fluctuation spectrum of CuGeO3: Raman scattering

15 April 1996

journal article
research article
Published by AIP Publishing in Journal of Applied Physics

Vol. 79 (8) , 5395-5397
https://doi.org/10.1063/1.362316

Abstract

Raman spectra of the magnetic fluctuation spectrum of CuGeO₃ are presented for 4<TB≤20 T. For B=0 the results show good agreement with theoretical expectations for a one‐dimensional isotropic Heisenberg antiferromagnet which exhibits a spin–Peierls transition. In the presence of a magnetic field the phase transition to the incommensurately modulated phase is observed around B=12.8 T at T=4.2 K. The spectra obtained in the high field phase clearly show evidence for a well‐defined spin fluctuation spectrum, which appears to present an intermediate case between the dimerized phase and the short‐range order regime of the uniform phase.

This publication has 8 references indexed in Scilit:

Inelastic Light Scattering from Magnetic Fluctuations in ${CuGeO}_{3}$
Physical Review Letters, 1996
Raman-scattering study of ${CuGeO}_{3}$ in the spin-Peierls phase
Physical Review B, 1994
High-Field Electron Spin Resonance and Magnetization in the Dimerized Phase of ${CuGeO}_{3}$
Physical Review Letters, 1994
Neutron-scattering study on the spin-Peierls transition in a quasi-one-dimensional magnet ${CuGeO}_{3}$
Physical Review B, 1994
Magnetic phase diagram of the spin-Peierls cuprate ${CuGeO}_{3}$
Physical Review B, 1993
Observation of the spin-Peierls transition in linear ${Cu}^{2 +}$ (spin-1/2) chains in an inorganic compound ${CuGeO}_{3}$
Physical Review Letters, 1993
Quantum spin dynamics of the antiferromagnetic linear chain in zero and nonzero magnetic field
Physical Review B, 1981
Zur Kristallstruktur von CuGeO3
Monatshefte für Chemie / Chemical Monthly, 1967