Doping evolution of the electronic structure in the single-layer cuprates Bi$ 2$Sr$ {2-x}$La$ x$CuO$ {6 δ}$: Comparison with other single-layer cuprates - Condensed Matter > SuperconductivityReport as inadecuate




Doping evolution of the electronic structure in the single-layer cuprates Bi$ 2$Sr$ {2-x}$La$ x$CuO$ {6 δ}$: Comparison with other single-layer cuprates - Condensed Matter > Superconductivity - Download this document for free, or read online. Document in PDF available to download.

Abstract: We have performed angle-resolved photoemission and core-level x-rayphotoemission studies of the single-layer cuprateBi$ 2$Sr$ {2-x}$La$ x$CuO$ {6+\delta}$ Bi2201 and revealed the dopingevolution of the electronic structure from the lightly-doped to optimally-dopedregions. We have observed the formation of the dispersive quasi-particle band,evolution of the Fermi ``arc- into the Fermi surface and the shift of thechemical potential with hole doping as in other cuprates. The doping evolutionin Bi2201 is similar to that in Ca$ {2-x}$Na$ {x}$CuO$ {2}$Cl$ 2$ Na-CCOC,where a rapid chemical potential shift toward the lower Hubbard band of theparent insulator has been observed, but is quite different from that inLa$ {2-x}$Sr$ {x}$CuO$ {4}$ LSCO, where the chemical potential does notshift, yet the dispersive band and the Fermi arc-surface are formed around theFermi level already in the lightly-doped region. The underlying Fermi surfaceshape and band dispersions are quantitatively analyzed using tight-binding fit,and the deduced next-nearest-neighbor hopping integral $t-$ also confirm thesimilarity to Na-CCOC and the difference from LSCO.



Author: M. Hashimoto, T. Yoshida, H. Yagi, M. Takizawa, A. Fujimori, M. Kubota, K. Ono, K. Tanaka, D.H. Lu, Z.-X. Shen, S. Ono, Yoichi An

Source: https://arxiv.org/







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