TY - JOUR
T1 - New aspects of the b*-LA phonon of CuGeO3
AU - Nishi, M.
AU - Kakurai, K.
AU - Fujii, Y.
AU - Katano, S.
AU - Akimitsu, J.
AU - Yethiraj, M.
AU - Fernandez-Baca, J. A.
N1 - Funding Information:
We acknowledge the expert technical assistance provided by Scott Moore, Brent Taylor, S. Watanabe, T. Shibuya, Y. Kawamura, and Y. Shimojo, and the sample preparation assistance provided by T. Kitazawa and Y. Zenitani. A part of this work was done at ORNL under US–Japan Cooperation Program in Neutron Scattering. ORNL is managed for the US DOE by Lockheed Martin Energy Research Corporation under contract DE-AC05-96OR22464. This work was partly supported by a Grant from CREST and the Science Fund of Japan Private School Promotion Foundation.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1999
Y1 - 1999
N2 - We performed high resolution measurements of the b*-LA phonon branch of CuGeO3 by inelastic neutron scattering. From the results it was clarified that the b*-LA broad branch reported earlier is composed of two phonon branches with excitation energies very nearby. The second branch close to this b*-LA mode cannot be assigned in the space group Pbmm and it may indicate that a twisting motion of GeO4 tetrahedra couples to the b*-LA mode. This coupling may be an indispensable ingredient for the spin-Peierls transition in CuGeO3.
AB - We performed high resolution measurements of the b*-LA phonon branch of CuGeO3 by inelastic neutron scattering. From the results it was clarified that the b*-LA broad branch reported earlier is composed of two phonon branches with excitation energies very nearby. The second branch close to this b*-LA mode cannot be assigned in the space group Pbmm and it may indicate that a twisting motion of GeO4 tetrahedra couples to the b*-LA mode. This coupling may be an indispensable ingredient for the spin-Peierls transition in CuGeO3.
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U2 - 10.1016/S0022-3697(99)00062-1
DO - 10.1016/S0022-3697(99)00062-1
M3 - Conference article
AN - SCOPUS:0032590613
VL - 60
SP - 1109
EP - 1111
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
SN - 0022-3697
IS - 8
T2 - Proceedings of the 1998 7th ISSP International Symposium Frontiers in Neutron Scattering Research (ISSP7)
Y2 - 24 November 1998 through 27 November 1998
ER -