Xenon-plasma light ultrahigh-resolution ARPES study of low-energy single-particle excitation gap in (Bi,Pb)2Sr2CuO 6

K. Nakayama, T. Sato, Y. Sekiba, Kensei Terashima, P. Richard, Kazutaka Kudo, N. Okumura, T. Sasaki, N. Kobayashi, T. Takahashi

Research output: Contribution to journalArticle

Abstract

We have performed ultrahigh-resolution angle-resolved photoemission spectroscopy of (Bi,Pb)2Sr2CuO6 by using a newly developed xenon-plasma light source to clarify the origin of the pseudogap (PG). We determined the comprehensive momentum and temperature dependences of the superconducting (SC) gap and the PG, and revealed a smooth evolution of the PG from the SC gap. We also found a linear scaling behavior of the characteristic PG temperature with the SC gap size regardless of the momentum location. These experimental results strongly suggest that the observed PG is caused by the precursor pairing.

Original languageEnglish
JournalPhysica C: Superconductivity and its Applications
Volume470
Issue numberSUPPL.1
DOIs
Publication statusPublished - Dec 2010
Externally publishedYes

Fingerprint

Xenon
xenon
Momentum
Plasmas
Photoelectron spectroscopy
excitation
momentum
Light sources
Temperature
energy
light sources
photoelectric emission
scaling
temperature dependence
spectroscopy
temperature

Keywords

  • ARPES
  • Cuprate
  • Pseudogap
  • Superconducting gap

ASJC Scopus subject areas

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

Cite this

Xenon-plasma light ultrahigh-resolution ARPES study of low-energy single-particle excitation gap in (Bi,Pb)2Sr2CuO 6 . / Nakayama, K.; Sato, T.; Sekiba, Y.; Terashima, Kensei; Richard, P.; Kudo, Kazutaka; Okumura, N.; Sasaki, T.; Kobayashi, N.; Takahashi, T.

In: Physica C: Superconductivity and its Applications, Vol. 470, No. SUPPL.1, 12.2010.

Research output: Contribution to journalArticle

Nakayama, K. ; Sato, T. ; Sekiba, Y. ; Terashima, Kensei ; Richard, P. ; Kudo, Kazutaka ; Okumura, N. ; Sasaki, T. ; Kobayashi, N. ; Takahashi, T. / Xenon-plasma light ultrahigh-resolution ARPES study of low-energy single-particle excitation gap in (Bi,Pb)2Sr2CuO 6 . In: Physica C: Superconductivity and its Applications. 2010 ; Vol. 470, No. SUPPL.1.
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AU - Terashima, Kensei

AU - Richard, P.

AU - Kudo, Kazutaka

AU - Okumura, N.

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