Doping Evolution of the Underlying Fermi Surface in La2-xSrxCuO4

T. Yoshida; X. J. Zhou; K. Tanaka; W. L. Yang; Z. Hussain; Z. -X. Shen; A. Fujimori; Seiki Komiya; Yoichi Ando; H. Eisaki; T. Kakeshita; S. Uchida

doi:10.1103/PhysRevB.74.224510

Doping Evolution of the Underlying Fermi Surface in La2-xSrxCuO4

Strongly Correlated Electrons 2009-11-11 v1 Superconductivity

Authors: T. Yoshida , X. J. Zhou , K. Tanaka , W. L. Yang , Z. Hussain , Z. -X. Shen , A. Fujimori , Seiki Komiya , Yoichi Ando , H. Eisaki , T. Kakeshita , S. Uchida

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Abstract

We have performed a systematic doping dependent study of La $_{2-x}$ Sr $_x$ CuO $_4$ (LSCO) (0.03 $\leq x \leq$ 0.3) by angle-resolved photoemission spectroscopy. In the entire doping range, the underlying ``Fermi surface" determined from the low energy spectral weight approximately satisfies Luttinger's theorem, even down to the lightly-doped region. This is in strong contrast to the result on Ca $_{2-x}$ Na $_x$ CuO $_2$ Cl $_2$ (Na-CCOC), which shows a strong deviation from Luttinger's theorem. The differences between LSCO and Na-CCOC are correlated with the different behaviors of the chemical potential shift and spectral weight transfer induced by hole doping.

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@article{arxiv.cond-mat/0510608,
  title  = {Doping Evolution of the Underlying Fermi Surface in La2-xSrxCuO4},
  author = {T. Yoshida and X. J. Zhou and K. Tanaka and W. L. Yang and Z. Hussain and Z. -X. Shen and A. Fujimori and Seiki Komiya and Yoichi Ando and H. Eisaki and T. Kakeshita and S. Uchida},
  journal= {arXiv preprint arXiv:cond-mat/0510608},
  year   = {2009}
}

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4 pages, 4 figures

Doping Evolution of the Underlying Fermi Surface in La2-xSrxCuO4

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