Binding energy of exciton in monolayer semiconductor WS2 with Yukawa-like screening potential

Tóm tắt

The Yukawa-like screening potential is suggested to describe the effect of environment on the binding energy of an exciton in the monolayer semiconductor WS₂. The FK Operator Method combined with the Levi-Civita transformation is used to retrieve energies for the states of  n= 1, 2, 3 which agree with experimental data. Experimental values of the parameters in the screening potential expression are also obtained for further use in the case of presence of external field.