Faculty Publications

Document Type

Article

Journal/Book/Conference Title Title

Physical Review Letters

Volume

92

Issue

13

First Page

137002-1

Last Page

137002-4

Abstract

The bulk-representative low-energy spectrum of Sr2RuO4 can be directly measured by angle-resolved photoemission. We find that the quasiparticle spectral line shape of Sr2RuO4 is sensitive to both temperature and momentum. Along the (0, 0)-(π, 0) direction, both gamma and ß bands develop a sharp quasiparticle peak near kF at low temperatures, but as the temperature increases the spectra quickly lose coherent weight and become broad backgrounds above ~130 K, which is the metal-nonmetal crossover temperature, TM, in the c-axis resistivity. However, spectra along the (0, 0)-(π, π) direction evolve smoothly across TM. A simple transport model can describe both in-plane and c-axis resistivity in terms of the quasiparticle line shape. Comparisons are also made to the cuprates, with implications for two dimensionality, magnetic fluctuations, and superconductivity

Department

Department of Physics

Comments

First published in Physical Review Letters, v. 92, n. 13 (2004), published by the American Physical Society. DOI: 10.1103/PhysRevLett.92.137002

Original Publication Date

4-2004

DOI of published version

10.1103/PhysRevLett.92.137002

Repository

UNI ScholarWorks, University of Northern Iowa, Rod Library

Date Digital

2004

Copyright

©2004 S.-C. Wang, H.-B. Yang, A.K.P. Sekharan, H. Ding, J.R. Engelbrecht, X. Dai, Z. Wang, A. Kaminski, T. Valla, T. Kidd, A.V. Fedorov, and P.D. Johnson. the copyright holder has granted permission for posting.

Language

EN

File Format

application/pdf

Included in

Physics Commons

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