{ "id": "0705.0152", "version": "v2", "published": "2007-05-01T18:26:52.000Z", "updated": "2007-08-24T17:22:38.000Z", "title": "Criticality in inhomogeneous magnetic systems: Application to quantum ferromagnets", "authors": [ "D. Belitz", "T. R. Kirkpatrick", "Ronojoy Saha" ], "comment": "4pp, 4 eps figs, contains additional information compared to PRL version. PRl, in press", "journal": "Phys. Rev. Lett. 99, 147203 (2007)", "doi": "10.1103/PhysRevLett.99.147203", "categories": [ "cond-mat.stat-mech", "cond-mat.str-el" ], "abstract": "We consider a $\\phi^4$-theory with a position-dependent distance from the critical point. One realization of this model is a classical ferromagnet subject to non-uniform mechanical stress. We find a sharp phase transition where the envelope of the local magnetization vanishes uniformly. The first-order transition in a quantum ferromagnet also remains sharp. The universal mechanism leading to a tricritical point in an itinerant quantum ferromagnet is suppressed, and in principle one can recover a quantum critical point with mean-field exponents. Observable consequences of these results are discussed.", "revisions": [ { "version": "v2", "updated": "2007-08-24T17:22:38.000Z" } ], "analyses": { "subjects": [ "75.40.Cx", "05.30.-d", "05.70.Jk", "75.40.Gb" ], "keywords": [ "inhomogeneous magnetic systems", "application", "criticality", "critical point", "itinerant quantum ferromagnet" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review Letters", "year": 2007, "month": "Oct", "volume": 99, "number": 14, "pages": 147203 }, "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2007PhRvL..99n7203B" } } }