Electromagnetic absorption of semiconductor 2D Majorana nanowires

Ruiz, Daniel; Osca, Javier; Serra, Llorenç
Journal of Physics Condensed Matter 27, 125302 (1-9) (2015)

We calculate the cross section for the electromagnetic absorption of planar 2D Majorana nanowires. The electromagnetic field is described in the dipole approximation. We discuss the signatures on the cross section of a near-zero-energy mode. A low energy peak for transverse polarization, absent in the longitudinal one, reveals the presence of the Majorana-like state. This peak is relatively robust against the thermal smearing of the level occupations. We consider the influence of optical masks hiding parts of the nanowire from the radiation.

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