Magnetoacoustic Measurements in the Noble Metals at 350 Mc/sec
Magnetoacoustic Measurements in the Noble Metals at 350 Mc/sec
复制标题
350 Mc/秒的贵金属磁声测量
DOI：
10.1103/physrev.128.1021
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发表时间：
1962
期刊：
影响因子：
--
通讯作者：
Vernon J. Easterling
中科院分区：
文献类型：
--
作者：
H. Bohm;Vernon J. Easterling
对贵金属进行了进一步的磁声测量，频率可达350Mc/s。超声脉冲高度h与磁场强度倒数1H的关系图显示，每种金属在几个方向上都有20个或更多的极大值和极小值。由磁声振荡的1H周期计算了费米面的尺寸，用费米面在动量空间的Q×H方向上极值的部分作为周期，详细地给出了沿[100]、[110]、[111]和[112]方向的费米面截面。结果与其它磁声效应数据、De Haas-van Alphen和反常集肤效应数据以及最近的能带理论计算所给出的费米表面尺寸进行了比较。给出了电子平均自由程和碰撞弛豫时间的简单计算。
Further magnetoacoustic measurements on the noble metals are presented for frequencies up to 350 Mc/sec. Plots of the ultrasonic pulse height, h, vs the reciprocal of the magnetic field strength, 1 H, show 20 or more maxima and minima for several orientations in each metal. Fermi surface dimensions are calculated from the periods in 1 H of the magnetoacoustic oscillations using the interpretation that the periodicity arises from those portions of the Fermi surface which are extremal in the q× H direction of momentum space; Fermi surface cross sections viewed along the [100],[110],[111], and [112] directions are shown in detail. The results are compared with Fermi surface dimensions given by:(1) other magnetoacoustic effect data,(2) de Haas-van Alphen and anomalous skin-effect data, and (3) recent band theory calculations. Some simple calculations of electron mean free paths and collision relaxation times are given.