Mesoscopic conductance fluctuations in graphene samples
| dc.creator | Kharitonov, Maxim Yu. | |
| dc.creator | Efetov, Konstantin B. | |
| dc.date | 2008-01-01 | |
| dc.date.accessioned | 2026-07-07T12:55:51Z | |
| dc.date.available | 2026-07-07T12:55:51Z | |
| dc.description | Mesoscopic conductance fluctuations in graphene samples at energies not very close to the Dirac point are studied analytically. We demonstrate that the conductance variance $<[δG]^2>$ is very sensitive to the elastic scattering breaking the valley symmetry. In the absence of such scattering (disorder potential smooth at atomic scales, trigonal warping negligible), the variance $<[δG]^2 > = 4 < [δG]^2 >_\text{metal}$ is four times greater than that in conventional metals, which is due to the two-fold valley degeneracy. In the absence of intervalley scattering, but for strong intravalley scattering and/or strong warping $<[δG]^2 > =2 < [δG]^2 >_\text{metal}$. Only in the limit of strong intervalley scattering $<[δG]^2 > = < [δG]^2 >_\text{metal}$. Our theory explains recent numerical results and can be used for comparison with existing experiments. | |
| dc.description | 4+ pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/0801.0302 | |
| dc.identifier | http://arxiv.org/abs/0801.0302 | |
| dc.identifier | Phys. Rev. B 78, 033404 (2008) | |
| dc.identifier | doi:10.1103/PhysRevB.78.033404 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/224392 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.title | Mesoscopic conductance fluctuations in graphene samples | |
| dc.type | text |