标题： 关于NpPdSn的磁性和电子性质 显示英文标题

标题： On the magnetic and electronic properties of NpPdSn

摘要： 我们通过比热、电阻率、塞贝克效应和霍尔效应，以及在2-300 K温度范围和高达14 T的磁场下进行的$^{237}$Np穆斯堡尔谱和中子衍射测量研究了NpPdSn。NpPdSn在奈尔温度$T_N$= 19 K以下反铁磁有序，并表现出Np$^{3+}$离子的局域磁性，具有双重简并的基态。 在磁态下，电阻率和比热由电子-磁振子散射特征，其自旋波谱是各向异性反铁磁体的典型特征。 增强的索末菲系数和磁电阻率、塞贝克和霍尔系数的典型行为都是强电子关联系统的特征。 NpPdSn的低温反铁磁态通过中子衍射和$^{237}$Np穆斯堡尔谱得到验证，并讨论了可能的磁结构。 显示英文摘要

摘要： We have studied NpPdSn by means of the heat capacity, electrical resistivity, Seebeck and Hall effect, $^{237}$Np M\"{o}ssbauer spectroscopy, and neutron diffraction measurements in the temperature range 2-300 K and under magnetic fields up to 14 T. NpPdSn orders antiferromagnetically below the N\'eel temperature $T_N$ = 19 K and shows localized magnetism of Np$^{3+}$ ion with a a doubly degenerate ground state. In the magnetic state the electrical resistivity and heat capacity are characterized by electron-magnon scattering with spin-waves spectrum typical of anisotropic antiferromagnets. An enhanced Sommerfeld coefficient and typical behavior of magnetorestistivity, Seebeck and Hall coefficients are all characteristic of systems with strong electronic correlations. The low temperature antiferromagnetic state of NpPdSn is verified by neutron diffraction and $^{237}$Np M\"{o}ssbauer spectroscopy and possible magnetic structures are discussed.