Effect of Spin-Orbit Interaction on the Spin Susceptibility of Small Particles
Effect of Spin-Orbit Interaction on the Spin Susceptibility of Small Particles
复制标题
自旋轨道相互作用对小粒子自旋敏感性的影响
DOI：
10.1143/jpsj.42.1457
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发表时间：
1977
影响因子：
1.7
通讯作者：
J. Sone
中科院分区：
文献类型：
--
作者：
J. Sone
研究了自旋轨道相互作用对金属小粒子自旋磁化率的影响。粒子是如此之小，以至于电子激发的光谱是离散的。人们已经知道，在没有自旋-轨道相互作用的情况下，具有偶数个传导电子的粒子具有消失的磁化率，而具有奇数个电子的粒子在低于其有限能级间距的温度下显示居里定律磁化率。在存在自旋轨道相互作用的情况下，自旋上下态的波函数的混合对自旋磁化率有显著的贡献。因此，具有偶数或奇数个电子的粒子在低温下分别具有非零或修正的居里型磁化率。特别是，如果相互作用非常强，两者都被简化为泡利顺磁性。
Effect of spin-orbit interaction on the spin susceptibility of small metallic particles is investigated. Particles are so small that the spectrum of electronic excitations is discrete. It has been known that, in the absence of the spin-orbit interaction, a particle with an even number of conduction electrons has a vanishing susceptibility and a particle with an odd number of electrons shows a Curie-law susceptibility at temperatures lower than its finite energy level spacing. In the presence of spin-orbit interaction, the mixing of wave functions of the spin up and down states gives a significant contribution to the spin susceptibility. Conse-quently, a particle with an even or odd number of electrons has a nonvanishing or a modified Curie-type susceptibility, respectively, at low temperatures. Particularly, if the interaction is very strong, both are reduced to the Pauli paramagnetism.