Nonlinear optical response of type-II Weyl fermions in two dimensions
نویسندگان
چکیده
We present a theoretical model to study the nonlinear optical response of materials with low-energy spectrum characterised by strongly tilted, type-II, Weyl cones in two dimensions, which we call 2D materials. Our findings reveal that tilted nature is responsible for appearance even harmonics signal, as well its strong polarisation dependence. discuss how it possible control such and envision can be used realise novel photonic devices sensing applications.
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ژورنال
عنوان ژورنال: Physical review
سال: 2022
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevb.105.195102