Observation of band renormalization effects in hole-doped high-[formula presented] superconductors

T. Sato, H. Matsui, T. Takahashi, H. Ding, H. B. Yang, S. C. Wang, T. Fujii, T. Watanabe, A. Matsuda, T. Terashima, K. Kadowaki

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4 Citations (Scopus)

Abstract

We report a systematic high-resolution angle-resolved photoemission spectroscopy on high-[Formula presented] superconductors [Formula presented] ([Formula presented]) to study the origin of many-body interactions responsible for superconductivity. For [Formula presented] and 3, a sudden change in the energy dispersion, so called “kink”, becomes pronounced on approaching ([Formula presented]) in the superconducting state, while a kink appears only around the nodal direction in the normal state. For [Formula presented], the kink shows no significant temperature dependence even across [Formula presented]. This could suggest that the coupling of electrons with [Formula presented] magnetic mode is dominant in the superconducting state for multilayered cuprates, while the interactions at the normal state and that of single-layered cuprates have a different origin.

Original languageEnglish
JournalPhysical Review Letters
Volume91
Issue number15
DOIs
Publication statusPublished - 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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