63Cu-NMR study of single-layer high-Tc cuprate Bi2.1Sr1.9CuO6

Akihiro Sakai, G. Q. Zheng, Y. Kitaoka, B. Liang, C. T. Lin

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


We have studied the ground state of the overdoped single-layered cuprate superconductor Bi2.1Sr1.9CuO6+δ (Tc = 8 K) by applying a strong magnetic field of 15.3 T to suppress superconductivity. In the normal state down to T = 1.6 K induced by the field, 63Cu nuclear spin-lattice relaxation rate (1/T1) is found to obey a T1T = const. relation, indicating that the ground state in the overdoped regime is a Fermi liquid state. Our result is at variance with a recent study by scanning tunneling microscopy (STM) that finds a pseudogap in a similar sample. The implication on the phase diagram is discussed.

Original languageEnglish
Pages (from-to)251-252
Number of pages2
JournalPhysica C: Superconductivity and its applications
Publication statusPublished - May 2003
Externally publishedYes
Eventproceedings of the 23rd international conference on low temper - Hiroshima, Japan
Duration: Aug 20 2002Aug 27 2002


  • BiSrCuO
  • High-T cuprate
  • NMR
  • Pseudogap

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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