{ "id": "1508.01809", "version": "v1", "published": "2015-08-07T20:35:10.000Z", "updated": "2015-08-07T20:35:10.000Z", "title": "Effects of electron-hole asymmetry near the Dirac point in graphene", "authors": [ "Salvatore Croce" ], "comment": "9 pages(+2), 6 figures", "categories": [ "cond-mat.mes-hall", "cond-mat.mtrl-sci", "cond-mat.str-el" ], "abstract": "In the recent years many researches were performed about graphene. Graphene is always considered a half metal or a zero gap semiconductor. In the last year new experiments were done about graphene on boron nitride and they obtained an insulating behaviour and a power law for conductivity at the charge neutrality point (CNP) or Dirac point (DP)(PhysRevLett.110.216601). In this work we will explore the electron-hole asymmetry and the disorder in graphene. In particular we analyze the asymmetry in the ordered phase, considering thermal doping at half filling and with a non zero chemical potential. After that we use the self consistent Born approximation for calculating the self energy correction from impurity scattering. Furthermore we shall analyze the electron-phonon interaction, using the deformation potential model for obtaining the temperature dependence for the compressibility. Finally we will speculate about temperature dependence of conductivity.", "revisions": [ { "version": "v1", "updated": "2015-08-07T20:35:10.000Z" } ], "analyses": { "keywords": [ "dirac point", "electron-hole asymmetry", "self consistent born approximation", "temperature dependence", "charge neutrality point" ], "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable" } } }