User: Guest  Login
Document type:
Zeitschriftenaufsatz 
Author(s):
Thurston, T. R.; Birgeneau, R. J.; Gabbe, D. R.; Jenssen, H. P.; Kastner, M. A.; Picone, P. J.; Preyer, N. W.; Axe, J. D.; B̈oni, P.; Shirane, G.; Sato, M.; Fukuda, K.; Shamoto, S. 
Title:
Neutron Scattering Study of Soft Optical Phonons in ${\mathrm{La}}_{2\mathrm{\ensuremath{-}}\mathrm{x}}$${\mathrm{Sr}}_{\mathrm{x}}$${\mathrm{CuO}}_{4\mathrm{\ensuremath{-}}\mathrm{y}}$ 
Abstract:
The soft optical phonons associated with the tetragonal-to-orthorhombic structural phase transition in La2-xSrxCuO4-y have been investigated using inelastic-neutron-scattering techniques. Single crystals with Sr concentration of x=0, 0.08, and 0.14 were studied. Both branches of the doubly degenerate X-point phonon which go soft at the tetragonal-to-orthorhombic transition have been observed in the orthorhombic phase. In all three samples one branch hardens, while the other remains relatively so...    »
 
Journal title:
Physical Review B 
Year:
1989 
Journal volume:
39 
Month:
mar 
Journal issue:
Pages contribution:
4327