Enhanced and switchable spin Hall effect of light near the Brewster   angle on reflection
  We reveal an enhanced and switchable spin Hall effect (SHE) of light near Brewster angle on reflection both theoretically and experimentally. The obtained spin-dependent splitting reaches 3200nm near Brewster angle, 50 times larger than the previous reported values in refraction. We find that the amplifying factor in week measurement is not a constant which is significantly different from that in refraction. As an analogy of SHE in electronic system, a switchable spin accumulation in SHE of light is detected. We were able to switch the direction of the spin accumulations by slightly adjusting the incident angle. 
Hailu Luo, Xinxing Zhou, Weixing Shu, Shuangchun Wen, Dianyuan Fan
physics.optics