Raman Study of High $T_{c}$ Superconductors $(La_{1-x}Sr_{x})_{2}CuO_{4}$

Content Provider	Scilit
Author	Sugai, Shunji Sato, Masatoshi Hosoya, Shoichi
Copyright Year	1987
Description	Journal: Japanese Journal of Applied Physics Lattice vibrations in high T$ _{c}$ superconductors $(La_{1-x }Sr_{ x })_{2}CuO_{4}$ are investigated by Raman scattering using single crystals. In $La_{2}CuO_{4}$ the 664 and 153 $cm^{-1}$ peaks are resonantly enhanced at low temperatures. The enhancement is caused by the electronic transition spanning the quasi-square Fermi surface to the nesting directions. The 664 $cm^{-1}$ mode is assigned to the planar breathing mode which strongly interacts with electrons at the Fermi level and the 796 $cm^{-1}$ mode in $(La_{0.925}Sr_{0.075})_{2}CuO_{4}$ is tentatively assigned to the axial breathing mode.
Related Links	http://iopscience.iop.org/article/10.1143/JJAP.26.L495/pdf
ISSN	00214922
e-ISSN	13474065
DOI	10.1143/jjap.26.l495
Journal	Japanese Journal of Applied Physics
Issue Number	4A
Volume Number	26
Language	English
Publisher	IOP Publishing
Publisher Date	1987-04-01
Access Restriction	Open
Subject Keyword	Journal: Japanese Journal of Applied Physics Lattice Vibrations Vibrations in High
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Engineering