Journal article
Raman scattering in the RTiO3 family of Mott-Hubbard insulators
Abstract
Raman-scattering measurements have been carried out for crystals of the RTiO3 (R=La,Ce,Pr,Nd,Sm,Gd) system whose members are Mott-Hubbard insulators. RTiO3 has an orthorhombically distorted perovskite unit cell. The distortion increases systematically from LaTiO3 to GdTiO3 and is accompanied by changes in electronic structure (decreasing W/U ratio). As a consequence of the changing electronic properties, the Raman spectrum shows an interesting …
Authors
Reedyk M; Crandles DA; Cardona M; Garrett JD; Greedan JE
Journal
Physical Review B, Vol. 55, No. 3, pp. 1442–1448
Publisher
American Physical Society (APS)
Publication Date
January 15, 1997
DOI
10.1103/physrevb.55.1442
ISSN
2469-9950