Doping dependence of the 43Ca Knight shift in the normal state of superconducting (La1-xCax)(Ba1.75-xLa0.25+x)Cu3Oy

被引：6
|
作者：
Marchand, S
Trokiner, A
Yakubovsky, A
Knizhnik, A
Eckstein, Y
机构：
[1] Ecole Super Phys & Chim Ind Ville Paris, CNRS, UPR5, Phys Solide Lab, F-75231 Paris 05, France
[2] Russian Acad Sci, Kurchatov Inst, Moscow 123182, Russia
[3] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2004年 / 408卷
关键词：
high-temperature superconductors; doping; spin susceptibility; Ca-43; NMR;
D O I：
10.1016/j.physc.2004.03.148
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Doping effects of the oxygen and calcium contents in the underdoped regime of the high-temperature superconductor (La1-xCax)(Ba1.75-xLa0.25+x)Cu3Oy have been investigated by Ca-43 NMR. The Knight shift (KS) has been determined as a function of temperature in the normal state. The orbital part of KS is found to vary with the calcium concentration. For lightly doped samples, the thermal behaviour of KS advocates for an increase of the doping level when increasing the calcium content. (C) 2004 Elsevier B.V. All rights reserved.
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收藏
页码：826 / 827
页数：2
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