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

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

doi:10.1016/S0921-4534(02)02410-3

⁶³Cu-NMR study of single-layer high-T_c cuprate Bi_2.1Sr_1.9CuO₆

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

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

We have studied the ground state of the overdoped single-layered cuprate superconductor Bi_2.1Sr_1.9CuO_6+δ (T_c = 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 language	English
Pages (from-to)	251-252
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	388-389
DOIs	https://doi.org/10.1016/S0921-4534(02)02410-3
Publication status	Published - May 2003
Externally published	Yes
Event	proceedings of the 23rd international conference on low temper - Hiroshima, Japan Duration: Aug 20 2002 → Aug 27 2002

Keywords

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

Access to Document

10.1016/S0921-4534(02)02410-3

Cite this

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

abstract = "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.",

keywords = "BiSrCuO, High-T cuprate, NMR, Pseudogap",

author = "Akihiro Sakai and Zheng, {G. Q.} and Y. Kitaoka and B. Liang and Lin, {C. T.}",

note = "Funding Information: We are grateful to M. Osada and M. Kakihana of Tokyo Institute of Technology for a collaboration in the early stage of this work, and C.M. Varma for stimulating discussions. This work was supported by MEXT grant nos. 14540338 and 10CE2004. ; proceedings of the 23rd international conference on low temper ; Conference date: 20-08-2002 Through 27-08-2002",

year = "2003",

month = may,

doi = "10.1016/S0921-4534(02)02410-3",

language = "English",

volume = "388-389",

pages = "251--252",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier",

}

TY - JOUR

T1 - 63Cu-NMR study of single-layer high-Tc cuprate Bi2.1Sr1.9CuO6

AU - Sakai, Akihiro

AU - Zheng, G. Q.

AU - Kitaoka, Y.

AU - Liang, B.

AU - Lin, C. T.

N1 - Funding Information: We are grateful to M. Osada and M. Kakihana of Tokyo Institute of Technology for a collaboration in the early stage of this work, and C.M. Varma for stimulating discussions. This work was supported by MEXT grant nos. 14540338 and 10CE2004.

PY - 2003/5

Y1 - 2003/5

N2 - 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.

AB - 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.

KW - BiSrCuO

KW - High-T cuprate

KW - NMR

KW - Pseudogap

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U2 - 10.1016/S0921-4534(02)02410-3

DO - 10.1016/S0921-4534(02)02410-3

M3 - Conference article

AN - SCOPUS:0037513182

SN - 0921-4534

VL - 388-389

SP - 251

EP - 252

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

T2 - proceedings of the 23rd international conference on low temper

Y2 - 20 August 2002 through 27 August 2002

ER -