{ "id": "1308.2343", "version": "v1", "published": "2013-08-10T21:25:51.000Z", "updated": "2013-08-10T21:25:51.000Z", "title": "Dynamics of an Insulating Skyrmion under a Temperature Gradient", "authors": [ "Lingyao Kong", "Jiadong Zang" ], "comment": "7 pages, 5 figures", "journal": "Phys. Rev. Lett. 111, 067203 (2013)", "categories": [ "cond-mat.mes-hall", "cond-mat.str-el" ], "abstract": "We study the Skyrmion dynamics in thin films under a temperature gradient. Our numerical simulations show that both single and multiple Skyrmions in a crystal move towards the high temperature region, which is contrary to particle diffusion. Noticing a similar effect in the domain wall motion, we employ a theory based on magnon dynamics to explain this counterintuitive phenomenon. Unlike the temperature driven domain wall motion, the Skyrmion's topological charge plays an important role, and a transverse Skyrmion motion is observed. Our theory turns out to be in agreement with numerical simulations, both qualitatively and quantitatively. Our calculation indicated that a very promising Skyrmion dynamic phenomenon can be observed in experiments.", "revisions": [ { "version": "v1", "updated": "2013-08-10T21:25:51.000Z" } ], "analyses": { "subjects": [ "75.70.Kw", "66.30.Lw", "75.10.Hk", "75.40.Mg" ], "keywords": [ "temperature gradient", "insulating skyrmion", "temperature driven domain wall motion", "high temperature region", "numerical simulations" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review Letters", "doi": "10.1103/PhysRevLett.111.067203", "year": 2013, "month": "Aug", "volume": 111, "number": 6, "pages": "067203" }, "note": { "typesetting": "TeX", "pages": 7, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2013PhRvL.111f7203K" } } }