63Cu NMR study of heavily doped superconductor TlSr2CaCu2O7-y

G. q. Zheng; K. Magishi; Y. Kitaoka; K. Asayama; T. Kondo; Y. Shimakawa; T. Manako; Y. Kubo

doi:10.1016/0921-4526(93)90771-W

⁶³Cu NMR study of heavily doped superconductor TlSr₂CaCu₂O_7-y

G. q. Zheng, K. Magishi, Y. Kitaoka, K. Asayama, T. Kondo, Y. Shimakawa, T. Manako, Y. Kubo

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The ⁶³Cu Knight shifts have been measured for the heavily doped high-T_c superconductors TlSr₂CaCu₂O_7-y, with T_c = 64 and 45 K. The spin part of the shift, K_s, is almost T-independent in the normal state and increases with decreasin g T_c. From the analysis of the anisotropy in K_s in both compounds, the transferred hyperfine field from the nearest-neighbor Cu spins has been deduced to be larger than that in YBa₂Cu₃O₇, similar to the results for Tl₂Ba₂CuO_6+y. A systemat ic correlation has been found in the heavily doped superconductors that the spin susceptibility and the nuclear quadrupole frequency increase with decreasing T_c, while 1/T₁T is suppressed, as reported previously.

Original language	English
Pages (from-to)	1012-1014
Number of pages	3
Journal	Physica B: Physics of Condensed Matter
Volume	186-188
Issue number	C
DOIs	https://doi.org/10.1016/0921-4526(93)90771-W
Publication status	Published - May 2 1993
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "63Cu NMR study of heavily doped superconductor TlSr2CaCu2O7-y",

abstract = "The 63Cu Knight shifts have been measured for the heavily doped high-Tc superconductors TlSr2CaCu2O7-y, with Tc = 64 and 45 K. The spin part of the shift, Ks, is almost T-independent in the normal state and increases with decreasin g Tc. From the analysis of the anisotropy in Ks in both compounds, the transferred hyperfine field from the nearest-neighbor Cu spins has been deduced to be larger than that in YBa2Cu3O7, similar to the results for Tl2Ba2CuO6+y. A systemat ic correlation has been found in the heavily doped superconductors that the spin susceptibility and the nuclear quadrupole frequency increase with decreasing Tc, while 1/T1T is suppressed, as reported previously.",

author = "Zheng, {G. q.} and K. Magishi and Y. Kitaoka and K. Asayama and T. Kondo and Y. Shimakawa and T. Manako and Y. Kubo",

note = "Funding Information: This work has been partially supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture and Science of Japan.",

year = "1993",

month = may,

day = "2",

doi = "10.1016/0921-4526(93)90771-W",

language = "English",

volume = "186-188",

pages = "1012--1014",

journal = "Physica B: Condensed Matter",

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publisher = "Elsevier",

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TY - JOUR

T1 - 63Cu NMR study of heavily doped superconductor TlSr2CaCu2O7-y

AU - Zheng, G. q.

AU - Magishi, K.

AU - Kitaoka, Y.

AU - Asayama, K.

AU - Kondo, T.

AU - Shimakawa, Y.

AU - Manako, T.

AU - Kubo, Y.

N1 - Funding Information: This work has been partially supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture and Science of Japan.

PY - 1993/5/2

Y1 - 1993/5/2

N2 - The 63Cu Knight shifts have been measured for the heavily doped high-Tc superconductors TlSr2CaCu2O7-y, with Tc = 64 and 45 K. The spin part of the shift, Ks, is almost T-independent in the normal state and increases with decreasin g Tc. From the analysis of the anisotropy in Ks in both compounds, the transferred hyperfine field from the nearest-neighbor Cu spins has been deduced to be larger than that in YBa2Cu3O7, similar to the results for Tl2Ba2CuO6+y. A systemat ic correlation has been found in the heavily doped superconductors that the spin susceptibility and the nuclear quadrupole frequency increase with decreasing Tc, while 1/T1T is suppressed, as reported previously.

AB - The 63Cu Knight shifts have been measured for the heavily doped high-Tc superconductors TlSr2CaCu2O7-y, with Tc = 64 and 45 K. The spin part of the shift, Ks, is almost T-independent in the normal state and increases with decreasin g Tc. From the analysis of the anisotropy in Ks in both compounds, the transferred hyperfine field from the nearest-neighbor Cu spins has been deduced to be larger than that in YBa2Cu3O7, similar to the results for Tl2Ba2CuO6+y. A systemat ic correlation has been found in the heavily doped superconductors that the spin susceptibility and the nuclear quadrupole frequency increase with decreasing Tc, while 1/T1T is suppressed, as reported previously.

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DO - 10.1016/0921-4526(93)90771-W

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AN - SCOPUS:0027905462

VL - 186-188

SP - 1012

EP - 1014

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

IS - C

ER -

⁶³Cu NMR study of heavily doped superconductor TlSr₂CaCu₂O_7-y

Abstract

ASJC Scopus subject areas

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