Infrared and magneto-optical spectroscopy of Cd$_3$As$_2$
ORAL
Abstract
We report infrared measurements on Cd$_3$As$_2$ single crystals with different orientations and different doping levels, as well as low-magnetic field measurements of Kerr effect. The resulting optical conductivity is isotropic and independent of the crystal direction. Linear regime of the real part of the optical conductivity qualitativelly agrees with massless particles, and is consistent with massless Kane electrons. Two contributions may be separated in the optical conductivity in zero and finite magnetic field. We propose that these two contributions originate from the bulk of the crystal, and a thin depletion layer.
*Ambizione Fellowship of SNSF
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