Evidence for the coexistence of superconductivity and the magnetic A-phase in CeCu2Si2 proved by muon Knight shift

被引：9
作者：
Koda, A
Higemoto, W
Kadono, R
Kawasaki, Y
Ishida, K
Kitaoka, Y
Geibel, C
Steglich, F
机构：
[1] High Energy Accelerator Res Org KEK, Inst Mat Struct Sci, Meson Sci Lab, Tsukuba, Ibaraki 3050801, Japan
[2] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan
[3] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2002年 / 71卷 / 06期
关键词：
CeCu2Si2; heavy fermion; superconductivity; magnetism; mu SR;
D O I：
10.1143/JPSJ.71.1427
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Muon spin rotation measurements under high transverse fields (HTF-ASR) have been performed on polycrystalline samples of Ce0.99Cu2.02Si2. The muon hyperfine coupling constant was determined to be -3.36 kOe/mu(B) from a Knight shift (K) vs susceptibility (chi) plot for 2 K < T < 200 K, which is comparable to those for Cu and Si nuclei. Below similar to1 K, the Knight shift at the precession signal, showing broadening due to the magnetic A-phase, exhibited a reduction at 0.5T, while it remained unchanged above 1.0 T, strongly suggesting the microscopic coexistence of superconductivity with the magnetic A-phase.
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收藏
页码：1427 / 1430
页数：4
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