Density dependent exchange contribution to $\partialμ/\partial n$ in extrinsic graphene
| dc.creator | Hwang, E. H. | |
| dc.creator | Hu, Ben Yu-Kuang | |
| dc.creator | Sarma, S. Das | |
| dc.date | 2007-03-20 | |
| dc.date | 2007-12-03 | |
| dc.date.accessioned | 2026-07-07T08:46:33Z | |
| dc.date.available | 2026-07-07T08:46:33Z | |
| dc.description | We calculate $\partialμ/\partial n$ in extrinsic graphene as a function of carrier density $n$ at zero temperature by obtaining the electronic self-energy within the Hartree-Fock approximation. The exchange-driven Dirac-point logarithmic singularity in the quasiparticle velocity of intrinsic graphene disappears in the extrinsic case. The calculated renormalized $\partialμ/\partial n$ in extrinsic graphene has the same qualitative $n^{-\frac12}$ density dependence as the inverse bare density of states with a 20% enhancement from the corresponding bare value, a relatively weak effect compared to the corresponding parabolic-band case. | |
| dc.description | 4 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0703499 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0703499 | |
| dc.identifier | Phys. Rev. Lett. 99, 226801 (2007) | |
| dc.identifier | doi:10.1103/PhysRevLett.99.226801 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/143287 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Density dependent exchange contribution to $\partialμ/\partial n$ in extrinsic graphene | |
| dc.type | text |