Magnetic fluctuation spectrum of CuGeO3: Raman scattering : The 40th annual conference on magnetism and magnetic materials
van Loosdrecht, P. H. M. ; Boucher, J. P. ; Martinez, G. ; Dhalenne, G. ; Revcolevschi, A.
[S.l.] : American Institute of Physics (AIP)
Published 1996
[S.l.] : American Institute of Physics (AIP)
Published 1996
| ISSN: |
1089-7550
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
Raman spectra of the magnetic fluctuation spectrum of CuGeO3 are presented for 4〈T〈300 K and B≤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. © 1996 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |