Polar Reflection Faraday Effect in Metals
Polar Reflection Faraday Effect in Metals
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金属中的极性反射法拉第效应
DOI：
10.1103/physrev.135.a1306
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发表时间：
1964
期刊：
影响因子：
--
通讯作者：
W. Harte
中科院分区：
文献类型：
--
作者：
E. Stern;J. McGroddy;W. Harte
如果一个反射平面偏振光从一个非铁磁金属与磁场垂直的反射表面，被反射的光被发现有其偏振平面旋转的入射光束，并略有椭圆偏振。这种效应被称为极性反射法拉第效应（PRFE）。已测量铝和银的PRFE作为波长在4150-8000 nm范围内的函数。描述了测量这种效应的设备，精度约为2%。对铝的详细研究表明，PRFE比普通的光学常数测量对表面条件的敏感性要低得多，并且所提出的测量似乎代表了本体性质。发现铝和银的频率依赖性可以在很大程度上由简单的带内理论解释。虽然该理论将PRFE与电导率张量的非对角项联系起来，但铝的许多光学测量的不一致性使得非对角电导率的确定变得模糊。在银的情况下，非对角电导率的真实的和虚部可以相当精确地获得。
If one reflects plane-polarized light from a nonferromagnetic metal with a magnetic field normal to the reflecting surface, the reflected light is found to have its plane of polarization rotated from that of the incident beam, and is slightly elliptically polarized. This effect is known as the polar reflection Faraday effect (PRFE). The PRFE has been measured for aluminum and silver as a function of wavelength in the range 4150-8000 Å. The equipment to measure this effect to an accuracy of about 2% is described. Detailed studies on aluminum have shown that the PRFE is much less sensitive to the condition of the surface than ordinary optical-constant measurements and the measurements presented appear to be representative of bulk properties. The frequency dependence found for both aluminum and silver can in large part be explained by the simple intraband theory. Although the theory relates the PRFE to the off-diagonal term of the conductivity tensor, the inconsistency of the many optical measurements of aluminum makes the determination of the off-diagonal conductivity ambiguous. In the case of silver, the real and imaginary parts of the off-diagonal conductivity can be obtained with a fair degree of accuracy.