Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-10-31
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
12 pages, 3 figures
Scientific paper
A study of the formation of excitons as a problem of two Dirac particles confined in two-layer graphene sheets separated by a dielectric when gaps are opened and they interact via a Coulomb potential is presented. We propose to observe Bose-Einstein condensation and superfluidity of quasi-two-dimensional dipole excitons in double layer graphene in the presence of band gaps. The energy spectrum of the collective excitations, the sound spectrum, and the effective exciton mass are functions of the energy gaps, density and interlayer separation. The superfluid density ns and temperature of the Kosterlitz-Thouless phase transition Tc are decreasing functions of the energy gaps as well as the interlayer separation, and therefore, could be controlled by these parameters.
Berman Oleg L.
Kezerashvili Roman Ya.
Ziegler Klaus G.
No associations
LandOfFree
Superfluidity of dipole excitons in two layers of gapped graphene 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 Superfluidity of dipole excitons in two layers of gapped graphene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superfluidity of dipole excitons in two layers of gapped graphene will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-147439