标题： 通过含磁场的相对论紧束缚近似方法计算金属的磁性属性 显示英文标题

标题： Calculations of Magnetic properties of metals through the magnetic-field-containing relativistic tight-binding approximation method

摘要： 金属的磁性通过基于最近提出的包含磁场的相对论紧束缚近似（MFRTB）方法 [Phys. Rev. B\textbf{91}, 075122 (2015)] 的电子结构计算进行研究。发现处于均匀磁场中的金属的电子能带具有簇结构，其中多个能带位于一个小的能量宽度内。每个簇对应于基于半经典近似的能量水平。虽然簇负责 de Haas-van Alphen（dHvA）振荡，但簇的组成能带会导致磁化率的额外振荡峰。此外，簇的能量宽度会导致 dHvA 振荡幅度的降低，这可以观察为伪 Dingle 温度和/或费米面曲率的高估。 显示英文摘要

摘要： Magnetic properties of metals are investigated through electronic structure calculations based on the recently-proposed magnetic-field-containing relativistic tight-binding approximation (MFRTB) method [Phys. Rev. B \textbf{91}, 075122 (2015)]. It is found that electronic energy bands for the metal immersed in the uniform magnetic field have a cluster structure in which multiple energy bands lie within a small energy width. Each cluster corresponds to the energy level that is derived on the basis of the semiclassical approximation. While the cluster is responsible for the de Haas-van Alphen (dHvA) oscillations, constituent energy bands of the cluster cause additional oscillation peaks of the magnetization. Also, the energy width of the cluster leads to the reduction of the amplitude of the dHvA oscillations, which can be observed as the pseudo Dingle temperature and/or the overestimation of the curvature of the Fermi surface.