Magnetic phase transition in superconducting Sr2YRu0.95Cu0.05O6 observed by the 99Ru Mossbauer effect

被引：51

作者：

DeMarco, M ^{[1
]}

Blackstead, HA

Dow, JD

Wu, MK

Chen, DY

Chien, FZ

Haka, M

Toorongian, S

Fridmann, J

机构：

[1] SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA

[2] SUNY Coll Buffalo, Dept Phys, Buffalo, NY 14222 USA

[3] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[4] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA

[5] Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan

[6] Natl Tsing Hua Univ, Ctr Mat Sci, Hsinchu, Taiwan

[7] Tamkang Univ, Dept Phys, Tamsui, Taiwan

[8] SUNY Buffalo, Dept Nucl Med, Buffalo, NY 14260 USA

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.62.14301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ru-99 Mossbauer effect measurements at 4.2, 23, 30, and 40 K show that the hyperfine magnetic field vanishes near 30 K, lower than the superconducting onset temperature of 45 K in Sr2YRu0.95Cu0.05O6 The data confirm that superconductivity and homogeneous magnetic order coexist. The hyperfine magnetic field measured at 4.2 K is 58.5(0.8) T. The well-resolved set of 18 lines in the 4.2 K measurement enabled a determination of a new value, -0.293(0.005) nm, for the nuclear magnetic moment of the 3/2 state of Ru-99. The isomer shift in this compound was measured to be 0.13(0.01) mm/s and it is consistent with a +5 charge state of Ru.

引用

页码：14301 / 14303

页数：3

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