Giant nonlinearity in Zero-Gap Semiconductor Superlattices
arXiv:1310.2789 · doi:10.1103/PhysRevB.89.085205
Abstract
Using an effective medium approach, we describe how by combining mercury-cadmium-telluride semiconductor alloys with band gap energies of opposite signs it may be possible to design a superlattice where the electrons have isotropic zero-effective mass and a single valley linear energy-momentum dispersion. We demonstrate that because of the zero-mass property, the superlattice may have a strong nonlinear response under the action of an external electromagnetic field.
32 pages, under review
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