Spin-phonon coupled modes in the incommensurate phases of doped CuGeO3
K. Takehana, T. Takamasu, M. Hase, G. Kido, T. Masuda, K. Uchinokura
Abstract
The doping effect of the folded phonon mode at 98 cm-1 was investigated on the Si-doped CuGeO3 by magneto-optical measurements in far-infrared (FIR) region under high magnetic field. The folded phonon mode at 98 cm-1 appears not only in the dimerized (D) phase but also in the dimerized-anitiferromagnetic (DAF) phase on the doped CuGeO3. The splitting was observed in the incommensurate (IC) phase and the antiferromagnetically ordered incommensurate (IAF) phase above HC. The split-off branches exhibit different field dependence from that of the pure CuGeO3 in the vicinity of HC, and the discrepancy in the IAF phase is larger than that in the IC phase. It is caused by the interaction between the solitons and the impurities.
Create a lesson
Related papers
Photoinduced switching of orbital-selective Mott states
M. Lisiecki, P. Werner, J. Herbrych
Ground-state properties of uniaxial magnetic model for antiferromagnetic 1/1 periodic approximants to icosahedral quasicrystals
Shinji Watanabe
Negligible Kitaev interaction in the van der Waals antiferromagnet NiBr2 revealed by neutron spectroscopy
Hao Xu, Shufan Cheng, Yanyan Shangguan et al.
Interfacial polarity control of anomalous Hall effect in LaCoO3-SrIrO3 heterostructures
Yeonjae Lee, Chanyoung Shin, Youngdo Kim et al.
Extensions of the Haldane gap proof: higher dimensions, near degeneracy, fermions and tensor-network states
Tarun Grover
Observable-Based Learning of Effective Entanglement Hamiltonians
Siyi Yang, Yuzhi Liu, Yi-Ming Ding et al.