Magnetic form factor of URu2Si2
Magnetic form factor of URu2Si2
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DOI：
10.1016/j.physb.2006.01.490
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发表时间：
2006-05-01
影响因子：
2.8
通讯作者：
Amitsuka, H.
中科院分区：
文献类型：
--
作者：
Kuwahara, K.;Kohgi, M.;Amitsuka, H.
本文报道了用极化中子测量重电子系统URu_2Si_2的场致磁形状因子。在60 K温度下，沿四极轴向施加6 T沿着磁场，对两种单晶进行了中子实验。所观察到的磁形状因子接近理论的5 f形状因子的自由U 3+或U 4+离子的偶极子近似计算的其他U基金属间化合物超导体。然而，在sin θ/lambda = 0处的外推值（0.07 μ（B）/U）小于体磁化值（0.10 μ（B）/N）。因此，该结果表明除了5 f电子之外的一些贡献对URu 2Si 2的体磁化。(c)2006 Elsevier B. V.保留所有权利。
We report the field-induced magnetic form factor of the heavy-electron system URu2Si2 obtained by using polarized neutrons. The neutron experiments were performed on the two single crystals at 60 K by applying a magnetic field of 6 T along the tetragonal c-axis. The observed magnetic form factor is close to the theoretical 5f form factor of the free U3+ or U4+ ions calculated by the dipole approximation as other U-based intermetallic superconductors. However, the extrapolated value at sin theta/lambda = 0 (0.07 mu(B)/U) is smaller than the bulk magnetization value (0.10 mu(B)/N). Therefore, this result indicates some contribution other than 5f electrons to the bulk magnetization of URu2Si2. (c) 2006 Elsevier B.V. All rights reserved.