Fermi-Liquid Ground State in the [Formula presented]-Type [Formula presented] Copper-Oxide Superconductor

Guo qing Zheng, T. Sato, Y. Kitaoka, M. Fujita, K. Yamada

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

We report nuclear magnetic resonance studies on the low-doped [Formula presented]-type copper-oxide [Formula presented] ([Formula presented]) in the superconducting state and in the normal state uncovered by the application of a strong magnetic field. We find that when the superconductivity is removed the underlying ground state is the Fermi liquid state. This result is at variance with that inferred from previous thermal conductivity measurement and appears to contrast with that in [Formula presented]-type copper oxides with a similar doping level where high-[Formula presented] superconductivity sets in within the pseudogap phase. The data in the superconducting state are consistent with the line-node gap model.

Original languageEnglish
Number of pages1
JournalPhysical Review Letters
Volume90
Issue number19
DOIs
Publication statusPublished - Jan 1 2003
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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