Open AccessSurface Phonon Polariton Modes in Suspended Monolayer Hexagonal Boron Nitrides
Author(s) -
Hongsheng Chen,
G.S. Shehu,
M.A. Husein,
Muhammad Imran,
H.B. Murtala,
Y. Jibril
Publication year - 2021
Publication title -
nigerian journal of technological development
Language(s) - English
Resource type - Journals
ISSN - 2437-2110
DOI - 10.4314/njtd.v18i2.4
Subject(s) - polariton , phonon , condensed matter physics , surface phonon , materials science , monolayer , transverse plane , boron nitride , dispersion (optics) , dispersion relation , optoelectronics , optics , nanotechnology , physics , structural engineering , engineering
Dispersion properties and characteristics of transverse magnetic (TM) and transverse electric (TE) surface phonon polaritons (SPhP) in suspended monolayer hexagonal boron nitrides (hBN) was studied extensively. The analytical results show that the hBN based TM (TE) phonon polaritons exist in restsrahlen bands when imaginary surface conductivity is positive. The effective mode index of TM phonon polaritons is much higher than that of TE phonon polaritons with respective values of ~3000 and ~1.0002 which makes TM SPhP more promising in the practical realization. In addition, the propagation length of TE SPhP is less lossy and surpass that of TM SPhP by factor of 104. This study compares these important properties and sheds more insight into their applications in optical communications, photonics and optoelectronics devices.