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

Comments

First published in Physical Review B, v. 77, n. 5 (2008), published by the American Physical Society. DOI: 10.1103/PhysRevB.77.054503

Original Publication Date

2-2008

DOI of published version

10.1103/PhysRevB.77.054503

Repository

UNI ScholarWorks, University of Northern Iowa, Rod Library

Date Digital

2008

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.

Language

EN

File Format

application/pdf

Included in

Physics Commons

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