论文标题
对非磁性金属的反向法拉第效应的自旋贡献
Spin contribution to the inverse Faraday effect of non-magnetic metals
论文作者
论文摘要
我们制定了对非磁金属反向法拉第效应的自旋贡献。我们处理反演对称性的作用，这会迫使所有电子带在布里渊区的每个点都至少两次退化。我们在分析和数字上均表明，在双层型带中的单一旋转下，我们对逆法拉第效应的表述是不变的。此外，我们还展示了带状结构中类似共振的特征对反向法拉第效应的重要性。我们的第一原理在诸如AU之类的简单金属中计算出的Faraday效应的自旋组件让人联想到其光吸收，并具有特征性的D-S共振，并在光谱中具有特征性的D-S共振。
We formulate the spin contribution to the inverse Faraday effect of non-magnetic metals. We deal with the role of the inversion symmetry, which forces all electronic bands to be at least twice degenerate at every point in the Brillouin zone. We show both analytically and numerically that our formulation of the inverse Faraday effect is invariant under unitary rotation within the doubly degenerate set of bands. In addition, we show the importance of resonance-like features in the band structure for the inverse Faraday effect. Our first-principles computed spin component of the inverse Faraday effect in a simple metal such as Au is reminiscent of its optical absorption, with a characteristic d-s resonance in the optical spectrum.
