Quantized beam shifts in graphene
Quantized beam shifts in graphene
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DOI：
10.1103/physrevb.93.081410
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发表时间：
2015-12
影响因子：
3.7
通讯作者：
W. Kort-Kamp;Nikolai A. Sinitsyn;D. Dalvit
中科院分区：
文献类型：
--
作者：
W. Kort-Kamp;Nikolai A. Sinitsyn;D. Dalvit
我们预测了外磁场中入射到石墨烯衬底系统上的光束的量子化Imbert-Fedorov，Goos-H“anchen和光子自旋霍尔位移。在量子霍尔机制中，Imbert-Fedorov和光子自旋霍尔位移被量子化为精细结构常数$\ensuremath{\alpha}$的整数倍，而Goos-H\“chen位移被量子化为${\ensuremath{\alpha}}^{2}$的整数倍。我们调查的磁场，温度和材料的色散和耗散对这些位移的影响。量子化的光束位移的实验演示可以实现在太赫兹频率的磁场的中等值。
We predict quantized Imbert-Fedorov, Goos-H\"anchen, and photonic spin Hall shifts for light beams impinging on a graphene-on-substrate system in an external magnetic field. In the quantum Hall regime, the Imbert-Fedorov and photonic spin Hall shifts are quantized in integer multiples of the fine structure constant $\ensuremath{\alpha}$, while the Goos-H\"anchen ones in multiples of ${\ensuremath{\alpha}}^{2}$. We investigate the influence on these shifts of magnetic field, temperature, and material dispersion and dissipation. An experimental demonstration of quantized beam shifts could be achieved at terahertz frequencies for moderate values of the magnetic field.