Magnetic and superconducting behaviours of doped and undoped double perovskite Ba2PrRuO6

被引:13
作者
Rao, SM
Wu, MK
Srivastava, JK
Mok, BH
Lu, CY
Liao, YC
Hsu, YY
Hsiue, YS
Chen, YY
Neeleshwar, S
Tsai, S
Ho, JC
Liu, HL
机构
[1] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[2] Acad Sinica, Inst Phys, Taipei 115, Taiwan
[3] Natl Chung Hsing Univ, Dept Phys & Mat Sci, Hsinchu, Taiwan
[4] Wichita State Univ, Dept Phys, Wichita, KS 67260 USA
[5] Natl Taiwan Normal Univ, Dept Phys, Taipei 116, Taiwan
关键词
double perovskite; cuproruthenate; high-T-c superconductivity; magnetic superconductor; frustration; spin glass;
D O I
10.1016/j.physleta.2004.02.029
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Our detailed measurements show the undoped double perovskite Ba22+Pr3+Ru5+O62- to be a nonmetallic (insulating) spin glass (SG) and the similar to 5-10% Cu-doped (i.e., Cu-concentration/(Cu + Ru-concentration) similar to 5-10%) system to be a spin glass superconductor (SGSC), though the critical temperature, T-c, (similar to 8-11 K) and the superconducting volume fraction, f(sc), (similar to 1-4%) are small. This smallness is presumably due to the presence of a large number of pair breaking spins and small carrier concentration in the lattice. Results and their implications are discussed. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:71 / 81
页数:11
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