Author(s):
1. Wajid Ullah Khan:
Department of Physics, KUST, Kohat, Pakistan
2. Abdullah Yar:
Department of Physics, KUST, Kohat, Pakistan
3. Kashif Sabeeh:
Department of Physics, QAU, Islamabad, Pakistan
Abstract:
Electron-phonon interaction effects on the electronic properties of Dirac fermions in topological insulator illuminated by electromagnetic radiation are investigated. It is shown that the band structure of topological insulator surface states is renormalized in the presence of electron-phonon interaction, depending on the interaction strength. We find that the real part of the gap renormalization function exhibits resonancelike behavior, whereas the imaginary part shows monotonic character in that region of the phonon energy. In addition, the electronic self-energy mimics the behavior of the gap renormalization factor with a small change in its imaginary part which shows gradual change. Interestingly, the spectral density function also shows resonancelike behavior. Moreover, the dynamic conductivity as a function of phonon energy changes from negative to positive gradually and then becomes saturated. However, it exhibits resonancelike behavior as a function of chemical potential.
Page(s):
416-416
DOI:
DOI not available
Published:
Journal: Abstract Book on International Conference on Food and Applied Sciences (ICFAS-23) 3-5 August 23, Volume: 0, Issue: 0, Year: 2023
Keywords:
Conductivity
,
band structure
,
selfenergy
,
dynamic
,
Electronphonon interaction
,
topological insulator
References:
References are not available for this document.
Citations
Citations are not available for this document.