-
本文运用磁反馈技术,通过测量de Haas-van Alphen振荡的谐波振幅的相对强度,详细研究了金属铅中传导电子在费密面极值轨道上的自旋劈裂因子gc。作者特别强调了样品的非均匀性对磁反馈技术的影响。文中给出了在磁场平行于[100],[110],[111]三个高对称方向上费密面各极值轨道上的gc实验值。这些gc值在0.71至1.147之间,与自由电子的g值有较大偏离。作者认为这是强自旋-轨道耦合和强电子-声子相互作用的结果。Using the magnetic feedback technique, a detailed experimental study has been made on the spin-splitting factors gc associated with the conduction electrons in extremal orbits on the Fermi surface of lead, by measuring the relative strengths of the harmonic amplitudes of the de Haas-van Alphen waveform. Particular attention has been paid to the influence of sample inhomogeneity. Experimental gc values are given for most of the extremal orbits on the lead Fermi surface for high-symmetry directions of [100] , [110] , and [111] of the magnetic field. These gc values are found to span the range from 0.71 to 1.147. The large deviation from the free-electron value are consequences of strong spin-orbit and electron-phonon interactions.
计量
- 文章访问数: 6201
- PDF下载量: 561
- 被引次数: 0