Digitale Medien
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
79 (1996), S. 5395-5397
ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
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.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.362316
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