Superconducting gap, pseudogap, and fermi surface of Bi2201: high energy- and momentum-resolution photoemission study

T. Sato, Y. Naitoh, T. Kamiyama, T. Takahashi, T. Yokoya, J. Mesot, A. Kaminski, H. Fretwell, J. C. Campuzano, H. Ding, I. Chong, T. Terashima, M. Takano, K. Kadowaki

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

We have performed a systematic high energy (7-11 meV) and momentum (0.01 angstrom-1) resolution angle-resolved photoemission spectroscopy (ARPES) on superstructure-free Bi1.80Pb0.38Sr2.01CuO6-δ with various dopings. All the samples from overdoped Tc = 0K to underdoped Tc = 18K possess a large hole-like Fermi surface centered at X point, whose volume shows a systematic evolution with doping. The superconducting gap exhibits a dx(2)-y(2)-like anisotropy with a typical gap value of 10-15 meV. By comparing with Bi2Sr2CaCu2O8, we found that the size of superconducting gap and the ARPES spectral feature near EF are well scaled with the maximum Tc (Tcmax). This suggests that the superconducting properties are characterized by Tcmax irrespective of the number of CuO2 layers or the structural modulation in BiO layer.

Original languageEnglish
Pages (from-to)2091-2094
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume341-348 (IV)
DOIs
Publication statusPublished - Nov 2000
Externally publishedYes
EventInternational Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI - Houston, TX, USA
Duration: Feb 20 2000Feb 25 2000

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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    Sato, T., Naitoh, Y., Kamiyama, T., Takahashi, T., Yokoya, T., Mesot, J., Kaminski, A., Fretwell, H., Campuzano, J. C., Ding, H., Chong, I., Terashima, T., Takano, M., & Kadowaki, K. (2000). Superconducting gap, pseudogap, and fermi surface of Bi2201: high energy- and momentum-resolution photoemission study. Physica C: Superconductivity and its applications, 341-348 (IV), 2091-2094. https://doi.org/10.1016/S0921-4534(00)01099-6