论文标题
自旋轨耦合系统中的高谐波产生
High-harmonic generation in spin-orbit coupled systems
论文作者
论文摘要
我们在二维电子系统中使用Rashba和Dresselhaus自旋轨道耦合研究高谐波生成，并借助组理论得出了谐波生成选择规则。基于这些最小模型和显式模拟的带结构，我们揭示了自旋轨道参数如何控制高谐波光谱中的截止能量。我们还表明，该光谱的磁场和极化依赖性提供了有关Rashba和Dresselhaus自旋轨道耦合参数的大小的信息。费米表面的形状至少可以定性地推导，如果仅存在一种类型的自旋轨道耦合，则可以确定耦合强度。
We study high-harmonic generation in two-dimensional electron systems with Rashba and Dresselhaus spin-orbit coupling and derive harmonic generation selection rules with the help of group theory. Based on the bandstructures of these minimal models and explicit simulations we reveal how the spin-orbit parameters control the cutoff energy in the high-harmonic spectrum. We also show that the magnetic field and polarization dependence of this spectrum provides information on the magnitude of the Rashba and Dresselhaus spin-orbit coupling parameters. The shape of the Fermi surface can be deduced at least qualitatively and if only one type of spin-orbit coupling is present, the coupling strength can be determined.
