{ "id": "1108.1339", "version": "v3", "published": "2011-08-05T14:46:41.000Z", "updated": "2011-12-19T16:12:05.000Z", "title": "Tunable interactions and phase transitions in Dirac materials in a magnetic field", "authors": [ "Z. Papić", "D. A. Abanin", "Y. Barlas", "R. N. Bhatt" ], "comment": "4 pages, 3 figures; supersedes earlier version", "journal": "Phys. Rev. B 84, 241306(R) (2011)", "doi": "10.1103/PhysRevB.84.241306", "categories": [ "cond-mat.mes-hall", "cond-mat.str-el" ], "abstract": "A partially filled Landau level (LL) hosts a variety of correlated states of matter with unique properties. The ability to control these phases requires tuning the effective electron interactions within a LL, which has been difficult to achieve in GaAs-based structures. Here we consider a class of Dirac materials in which the chiral band structure, along with the mass term, gives rise to a wide tunability of the effective interactions by the magnetic field. This tunability is such that different phases can occur in a single LL, and phase transitions between them can be driven in situ. The incompressible, Abelian and non-Abelian, liquids are stabilized in interaction regimes different from GaAs. Our study points to a realistic method of controlling the correlated phases and studying the phase transitions between them in materials such as graphene, bilayer graphene, and topological insulators.", "revisions": [ { "version": "v3", "updated": "2011-12-19T16:12:05.000Z" } ], "analyses": { "subjects": [ "87.10.-e", "63.20.Pw", "63.22.-m", "73.43.-f" ], "keywords": [ "phase transitions", "dirac materials", "magnetic field", "tunable interactions", "chiral band structure" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review B", "year": 2011, "month": "Dec", "volume": 84, "number": 24, "pages": 241306 }, "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable", "inspire": 922532, "adsabs": "2011PhRvB..84x1306P" } } }