Coulomb interactions of massless Dirac fermions in graphene; pair-distribution functions and exchange-driven spin-polarized phases
| dc.creator | Dharma-wardana, M. W. C. | |
| dc.date | 2006-07-25 | |
| dc.date.accessioned | 2026-07-07T07:16:10Z | |
| dc.date.available | 2026-07-07T07:16:10Z | |
| dc.description | The quasi-2D electrons in graphene behave as massless fermions obeying a Dirac-Weyl equation in the low-energy regime near the two Fermi points. The stability of spin-polarized phases (SPP) in graphene is considered. The exchange energy is evaluated from the analytic pair-distribution functions, and the correlation energies are estimated via a closely similar four-component 2D electron fluid which has been investigated previously. SPPs appear for sufficiently high doping, when the exchange energy alone is considered. However, the inclusion of correlations is found to {\it suppress} the spin-phase transition in ideal graphene. | |
| dc.description | 5 pages, 3 figures, Revtex | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0607661 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0607661 | |
| dc.identifier | Solid State Communications 140, 4-8 (2006) | |
| dc.identifier | doi:10.1016/j.ssc.2006.07.044 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/113490 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Coulomb interactions of massless Dirac fermions in graphene; pair-distribution functions and exchange-driven spin-polarized phases | |
| dc.type | text |