{"paper":{"title":"Is Graphene a Fermi Liquid?","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"E.H. Hwang, S. Das Sarma, Wang-Kong Tse","submitted_at":"2006-10-20T16:11:26Z","abstract_excerpt":"We answer the question posed in the title above by considering theoretically the electron-electron interaction induced many-body effects in undoped (`intrinsic') and doped (`extrinsic') 2D graphene layers. We find that (1) intrinsic graphene is a marginal Fermi liquid with the imaginary part of the self-energy, ${Im}\\Sigma(\\omega)$, going as linear in energy $\\omega$ for small $\\omega$, implying that the quasiparticle spectral weight vanishes at the Dirac point as $({ln}\\omega)^{-1}$; and, (2) extrinsic graphene is a well-defined Fermi liquid with ${Im}\\Sigma(\\omega)\\sim \\omega^2\\mathrm{ln}\\om"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0610581","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}