Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-03-01
Appl. Phys. Lett. 98 (2011) 212111
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
11 pages, 4 figures
Scientific paper
We investigate the low-field phonon-limited mobility in armchair graphene nanoribbons (GNRs) using full-band electron and phonon dispersion relations. We show that lateral confinement suppresses the intrinsic mobility of GNRs to values typical of common bulk semiconductors, and very far from the impressive experiments on 2D graphene. Suspended GNRs with a width of 1 nm exhibit a mobility close to 500 cm^2/Vs at room temperature, whereas if the same GNRs are deposited on HfO2 mobility is further reduced to about 60 cm^2/Vs due to surface phonons. We also show the occurrence of polaron formation, leading to band gap renormalization of ~118 meV for 1 nm-wide armchair GNRs.
Betti Alessandro
Fiori Gianluca
Iannaccone Giuseppe
No associations
LandOfFree
Strong mobility degradation in ideal graphene nanoribbons due to phonon scattering does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Strong mobility degradation in ideal graphene nanoribbons due to phonon scattering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Strong mobility degradation in ideal graphene nanoribbons due to phonon scattering will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-472295