On Charge-Dipole And Dipole-Dipole Interactions In Two-Dimensional Materials*

Today a charge-charge interaction in 2D configuration space is well known [1]. While a charge-dipole and dipole-dipole interactions in 3D configuration space are well know we lack knowledge of these interactions in 2D configuration space. We study the influence of the reduction of dimensionality on a charge-dipole and dipole-dipole interactions in 2D configuration space. We demonstrate that the screened nature of Coulomb interaction imposes peculiarities in 2D charge-dipole and dipole-dipole interactions behavior. The explicit analytical form for the charge-dipole and dipole-dipole interactions in 2D configuration space is derived [2]. We demonstrate that the reduction of dimensionality can alter the charge-dipole and dipole-dipole interactions in 2D case. The asymptotics of these interactions at large distances coincide to the charge-dipole and dipole-dipole interactions in 3D configuration space. This means that at large distances the charge-dipole interaction in a 2D configuration space is the same as in vacuum in 3D configuration space. The obtained charge-dipole and dipole-dipole interactions will find wide application and contribute to the advancement of research on novel 2D materials.

 

[1] L. V. Keldysh, JETP Lett. 29, 658 (1979).

[2] R. Ya. Kezerashvili, V. Ya. Kezerashvili, Phys. Rev. B 105, 205416 (2022).