Interpretation of Knight Shifts and Susceptibilities of Transition Metals: Platinum
Interpretation of Knight Shifts and Susceptibilities of Transition Metals: Platinum
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过渡金属的奈特位移和敏感性的解释：铂
DOI：
10.1103/physrev.134.a650
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发表时间：
1964
期刊：
影响因子：
--
通讯作者：
Y. Yafet
中科院分区：
文献类型：
--
作者：
A. Clogston;V. Jaccarino;Y. Yafet
测量的幅度，符号，和温度依赖性的奈特位移和铂的磁化率被用来确定每个所产生的自旋顺磁性的$s$和$d$带，轨道顺磁性和核心抗磁性的贡献。本文导出了一个完整的包含自旋轨道耦合的过渡金属奈特位移轨道贡献的表达式。我们表明，在紧束缚极限，在自由离子，一个简单的关系之间存在的轨道磁化率和轨道超精细场。讨论了d自旋磁化率随比热值的增大与超导性的可能性之间的关系。
Measurements of the magnitude, sign, and temperature dependence of the Knight shift and susceptibility in platinum are used to determine the contributions to each arising from the spin paramagnetism of the $s$ and $d$ bands, the orbital paramagnetism and the core diamagnetism. A complete expression for the orbital contribution to the Knight shift in a transition metal is derived, including spin-orbit coupling. We show that in the tight-binding limit, as in the free ion, a simple relation exists between the orbital susceptibility and the orbital hyperfine field. The relation of the enhancement of the $d$-spin susceptibility over its specific heat value to the possible occurrence of superconductivity is discussed.