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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
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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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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. 2005-10-23. Doping Evolution of the Underlying Fermi Surface in La2-xSrxCuO4. https://doi.org/10.1103/physrevb.74.224510

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