Faculty Publications
Document Type
Article
Journal/Book/Conference Title Title
Physical Review B
Volume
77
Issue
05
First Page
054503-1
Last Page
054503-7
Abstract
Angle-resolved photoemission and optical spectroscopy are used to probe the electronic structure of the one-dimensional Mott insulator Sr2CuO3+δ, both at half-filling and with small concentrations of excess oxygen doping. Spin-charge separation can be seen as evidenced by the existence of spinon and holon branches in the photoemission spectra. Optical studies reveal no significant doping dependence, while photoemission studies show a large energy shift in the spinon and holon states with respect to the main valence band states which remain nearly unaffected. The results suggest the excess dopant carriers are incorporated solely within the one-dimensional Hubbard band which is electronically isolated from the rest of the states in the system.
Department
Department of Physics
Original Publication Date
2-2008
DOI of published version
10.1103/PhysRevB.77.054503
Repository
UNI ScholarWorks, University of Northern Iowa, Rod Library
Copyright
©2008 T.E. Kidd, T. Valla, P.D. Johnson, K.W. Kim, G.D. Gu, and C.C. Homes. The copyright holder has granted permission for posting.
Date Digital
2008
Language
EN
File Format
application/pdf
Recommended Citation
Kidd, Tim; Valla, T.; Johnson, P. D.; Kim, K. W.; Gu, G. D.; and Homes, C. C., "Doping of a One-Dimensional Mott Insulator: Photoemission and Optical Studies of Sr2Cu03+δ" (2008). Faculty Publications. 11.
https://scholarworks.uni.edu/phy_facpub/11
Comments
First published in Physical Review B, v. 77, n. 5 (2008), published by the American Physical Society. DOI: 10.1103/PhysRevB.77.054503