Anomalous longitudinal nuclear spin relaxation in TlBa2(Ca,Y) Cu2O7 at the non-superconducting phase boundary

Yuuji Kunii; Takao Suzuki; Takayuki Goto; Satoru Nakajima

doi:10.1016/j.jmmm.2003.12.321

Anomalous longitudinal nuclear spin relaxation in TlBa₂(Ca,Y) Cu₂O₇ at the non-superconducting phase boundary

Yuuji Kunii, Takao Suzuki, Takayuki Goto, Satoru Nakajima

研究成果: Article › 査読

1 被引用数 (Scopus)

抄録

Tl-based high-T_C cuprate TlBa₂Ca_1-xY _xCu₂O₇ (Tl1212) shows an anomalous electronic phase diagram, in which the non-superconducting phase persists on hole doping until x = 0.6 where T_C abruptly jumps to 96 K. Around the critical hole concentration, Tl nuclear relaxation curves follow a so-called stretched-exponential function, suggesting that the doped holes are localized in small islands. This microscopic inhomogeneity in hole distribution is considered to be the origin of anomalous suppression of the superconductivity in the lightly doped region.

本文言語	English
ページ（範囲）	e1521-e1522
ジャーナル	Journal of Magnetism and Magnetic Materials
巻	272-276
号	SUPPL. 1
DOI	https://doi.org/10.1016/j.jmmm.2003.12.321
出版ステータス	Published - 2004 5月
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学

文献へのアクセス

10.1016/j.jmmm.2003.12.321

他のファイルとリンク

引用スタイル

@article{af9a07c324ed4e2c871a26848fcbccda,

title = "Anomalous longitudinal nuclear spin relaxation in TlBa2(Ca,Y) Cu2O7 at the non-superconducting phase boundary",

abstract = "Tl-based high-TC cuprate TlBa2Ca1-xY xCu2O7 (Tl1212) shows an anomalous electronic phase diagram, in which the non-superconducting phase persists on hole doping until x = 0.6 where TC abruptly jumps to 96 K. Around the critical hole concentration, Tl nuclear relaxation curves follow a so-called stretched-exponential function, suggesting that the doped holes are localized in small islands. This microscopic inhomogeneity in hole distribution is considered to be the origin of anomalous suppression of the superconductivity in the lightly doped region.",

keywords = "NMR, Tl-based high-T cuprate",

author = "Yuuji Kunii and Takao Suzuki and Takayuki Goto and Satoru Nakajima",

note = "Funding Information: A part of experiments has been done at High-Field Laboratory, Institute of Material Research, Tohoku University. This research was partially supported by the Toray Science Foundation, and by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid.",

year = "2004",

month = may,

doi = "10.1016/j.jmmm.2003.12.321",

language = "English",

volume = "272-276",

pages = "e1521--e1522",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "SUPPL. 1",

}

TY - JOUR

T1 - Anomalous longitudinal nuclear spin relaxation in TlBa2(Ca,Y) Cu2O7 at the non-superconducting phase boundary

AU - Kunii, Yuuji

AU - Suzuki, Takao

AU - Goto, Takayuki

AU - Nakajima, Satoru

N1 - Funding Information: A part of experiments has been done at High-Field Laboratory, Institute of Material Research, Tohoku University. This research was partially supported by the Toray Science Foundation, and by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid.

PY - 2004/5

Y1 - 2004/5

N2 - Tl-based high-TC cuprate TlBa2Ca1-xY xCu2O7 (Tl1212) shows an anomalous electronic phase diagram, in which the non-superconducting phase persists on hole doping until x = 0.6 where TC abruptly jumps to 96 K. Around the critical hole concentration, Tl nuclear relaxation curves follow a so-called stretched-exponential function, suggesting that the doped holes are localized in small islands. This microscopic inhomogeneity in hole distribution is considered to be the origin of anomalous suppression of the superconductivity in the lightly doped region.

AB - Tl-based high-TC cuprate TlBa2Ca1-xY xCu2O7 (Tl1212) shows an anomalous electronic phase diagram, in which the non-superconducting phase persists on hole doping until x = 0.6 where TC abruptly jumps to 96 K. Around the critical hole concentration, Tl nuclear relaxation curves follow a so-called stretched-exponential function, suggesting that the doped holes are localized in small islands. This microscopic inhomogeneity in hole distribution is considered to be the origin of anomalous suppression of the superconductivity in the lightly doped region.

KW - NMR

KW - Tl-based high-T cuprate

UR - http://www.scopus.com/inward/record.url?scp=23144437514&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=23144437514&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2003.12.321

DO - 10.1016/j.jmmm.2003.12.321

M3 - Article

AN - SCOPUS:23144437514

SN - 0304-8853

VL - 272-276

SP - e1521-e1522

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - SUPPL. 1

ER -