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20 April 2024

» arxiv » cond-mat/0510608

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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 ;
Date:	23 Oct 2005
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.
Source:	arXiv, cond-mat/0510608
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