Program

P.52 -- Poster, NCTP-42

Date: Wednesday, 2 August 2017

Time: 08h30 - 10h00

Surface optical phonon-assisted cyclotron resonance in monolayer phosphorene on polar substrates via two photon absorption process

Huynh Vinh Phuc (1), Luong Van Tung (1), Le Dinh (2)

(1) Dong Thap University; (2) Hue University's College of Education

We theoretically study the influence of surface optical (SO) phonons on the phonon-assisted cyclotron resonance (PACR) effect in a monolayer phosphorene on different polar substrates via both one and two-photon absorption processes. The two-photon absorption process gives a significant contribution to magneto-optical absorption coefficient (MOAC) compared to one photon process. The effects of polar substrates on the MOAC and full-width at half maximum (FWHM) through their electron-SO phonon scattering are presented. We also discussed the effects of temperature, phosphorene-substrate thickness, and magnetic field on the MOAC and the FWHM. The present results for monolayer phosphorene are compared with those in conventional two-dimensional systems as well as in graphene. Our results provide a significantly quantitative picture for SO phonon interaction induced magneto-optical absorption in phosphorene on polar substrates.

Presenter: Huỳnh Vĩnh Phúc