NMR Study Under Pressure on the La1111 Pnictides, LaFeAsO1-xFx

被引：0

作者：

Fujiwara, N. ^{[1
]}

Nakano, T. ^{[1
]}

Okada, H. ^{[2
]}

Takahashi, H. ^{[3
,4
]}

Kamihara, Y. ^{[4
,5
]}

Hirano, M. ^{[6
]}

Hosono, H. ^{[6
,7
]}

机构：

[1] Kyoto Univ, Grad Sch Human & Environm Studies, Sakyo Ku, Kyoto 6068501, Japan

[2] Tohoku Gakuin Univ, Fac Engn, Tagagyo 9858537, Japan

[3] Nihon Univ, Coll Humanities & Sci, Tokyo 1568550, Japan

[4] Japan Sci & Technol Agcy, TRiP, Tokyo 1020075, Japan

[5] Keio Univ, Fac Sci & Technol, Yokohama, Kanagawa 2238521, Japan

[6] Tokyo Inst Technol, FRC, Yokohama, Kanagawa 2268503, Japan

[7] Tokyo Inst Technol, MSL, Yokohama, Kanagawa 2268503, Japan

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2011年 / 24卷 / 03期

关键词：

NMR; High pressure; La; 1111; series; ELECTRONIC PHASE-DIAGRAM; SUPERCONDUCTIVITY;

D O I：

10.1007/s10948-010-1097-x

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The relationship between antiferromagnetic (AF) fluctuation and superconductivity was investigated in the La1111 series, LaFeAsO1-xFx (x = 0.05, 0.08, and 0.14) by examining nuclear relaxation rates (1/T-1) at both ambient pressure and 3.0 GPa. Although the AF fluctuation is enhanced by applying pressure in the underdoped regime (x = 0.05, and 0.08), the increase in critical transition temperature (T-c) is small, whereas T-c increases remarkably in the overdoped regime (x = 0.14) where the AF fluctuation is absent, suggesting that high T-c above 40 K originates not from the AF fluctuation but from the density of states at the electron pocket.

引用

页码：1145 / 1148

页数：4

共 50 条

[1] NMR Study Under Pressure on the La1111 Pnictides, LaFeAsO1−xFx
N. Fujiwara
T. Nakano
H. Okada
H. Takahashi
Y. Kamihara
M. Hirano
H. Hosono
Journal of Superconductivity and Novel Magnetism, 2011, 24 : 1145 - 1148
[2] 75As-NMR Studies on LaFeAsO1-xFx (x=0.14) under a Pressure of 3 GPa
Tatsumi, Kenichiro
Fujiwara, Naoki
Okada, Hironari
Takahashi, Hiroki
Kamihara, Yoichi
Hirano, Masahiro
Hosono, Hideo
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2009, 78 (02)
[3] Nematicity in LaFeAsO1-xFx
Hess, C.
Grafe, H.
Kondrat, A.
Lang, G.
Hammerath, F.
Wang, L.
Klingeler, R.
Behr, G.
Buechner, B.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2017, 254 (01):
[4] 75As-nuclear magnetic relaxation on LaFeAsO1-xFx under pressure
Fujiwara, N.
Tatsumi, K.
Nakano, T.
Okada, H.
Takahashi, H.
Kamihara, Y.
Hirano, M.
Hosono, H.
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2010, 470 : S347 - S348
[5] Magnetic fluctuations and superconductivity in LaFeAsO1-xFx under pressure as seen via 75As NMR
Nakano, T.
Fujiwara, N.
Kamihara, Y.
Hirano, M.
Hosono, H.
Okada, H.
Takahashi, H.
PHYSICAL REVIEW B, 2010, 82 (17)
[6] 75As-NMR Studies of LaFeAsO1-xFx for Various x Values
Kobayashi, Yoshiaki
Satomi, Erika
Lee, Sang Chul
Sato, Masatoshi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2010, 79 (09)
[7] Homogeneous Coexistence in CaFe1-xCoxAsF and Phase Segregation in LaFeAsO1-xFx Studied via NMR
Fujiwara, N.
Matsuishi, S.
Kamihara, Y.
Hosono, H.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2013, 26 (08) : 2689 - 2692
[8] Progressive slowing down of spin fluctuations in underdoped LaFeAsO1-xFx
Hammerath, F.
Graefe, U.
Kuehne, T.
Kuehne, H.
Kuhns, P. L.
Reyes, A. P.
Lang, G.
Wurmehl, S.
Buechner, B.
Carretta, P.
Grafe, H. -J.
PHYSICAL REVIEW B, 2013, 88 (10)
[9] Magnetism in CeFeAsO1-xFx and LaFeAsO1-xFx from first principles
Sharma, S.
Shallcross, S.
Dewhurst, J. K.
Sanna, A.
Bersier, C.
Massidda, S.
Gross, E. K. U.
PHYSICAL REVIEW B, 2009, 80 (18):
[10] Superconductivity and critical current density in LaFeAsO1-xFx compounds
Shahbazi, M.
Shekhar, C.
Srivastava, O. N.
Attard, D.
Peleckis, G.
Du, Y.
Cheng, Z. X.
Dou, S. X.
Wang, X. L.
THIN SOLID FILMS, 2010, 518 (24) : E42 - E45

← 1 2 3 4 5 →