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Phys. Rev. Lett. 86, 5578 - 5581 (2001)

Dual Nature of the Electronic Structure of (La2-x-yNdySrx)CuO4 and La1.85Sr0.15CuO4

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X. J. Zhou1,2, T. Yoshida3, S. A. Kellar1, P. V. Bogdanov1, E. D. Lu2, A. Lanzara1,2, M. Nakamura2, T. Noda4, T. Kakeshita4, H. Eisaki4, S. Uchida4, A. Fujimori3, Z. Hussain2, and Z.-X. Shen1
1Department of Physics, Applied Physics and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305
2Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, California 94720
3Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan
4Department of Superconductivity, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan

Received 31 August 2000

High resolution angle-resolved photoemission measurements have been carried out on (La1.4-x-Nd0.6Srx)CuO4, a model system with static one-dimensional (1D) charge ordering (stripe), and (La1.85-Sr0.15)CuO4, a high temperature superconductor (Tc  =  40 K) with possible dynamic stripes. In addition to the straight segments near ( π,0) and ( 0,π) antinodal regions, we have identified the existence of spectral weight along the [1,1] nodal direction in the electronic structure of both systems. This observation of nodal state, together with the straight segments near antinodal regions, reveals the dual nature of the electronic structure of stripes due to the competition of order and disorder.


©2001 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.86.5578
DOI: 10.1103/PhysRevLett.86.5578
PACS: 74.25.Jb, 71.18.+y, 71.27.+a, 74.72.Dn

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