{ "id": "1408.2121", "version": "v2", "published": "2014-08-09T15:03:08.000Z", "updated": "2014-11-19T09:12:11.000Z", "title": "Spin-valley relaxation and quantum transport regimes in two-dimensional transition metal dichalcogenides", "authors": [ "Hector Ochoa", "Francesca Finocchiaro", "Francisco Guinea", "Vladimir I. Fal'ko" ], "comment": "12 pages, 5 figures", "categories": [ "cond-mat.mes-hall" ], "abstract": "Quantum transport and spintronics regimes are studied in p- and n-doped atomic layers of hexagonal transition metal dichalcogenides (TMDCs), subject to the interplay between the valley structure and spin-orbit coupling. We find how spin relaxation of carriers depends on their areal density and show that it vanishes for holes near the band edge, leading to the density-independent spin diffusion length, and we develop a theory of weak localisation/antilocalisation, describing the crossovers between the orthogonal, double-unitary and symplectic regimes of quantum transport in TMDCs.", "revisions": [ { "version": "v1", "updated": "2014-08-09T15:03:08.000Z", "comment": "4 pages + SI", "journal": null, "doi": null }, { "version": "v2", "updated": "2014-11-19T09:12:11.000Z" } ], "analyses": { "subjects": [ "73.23.-b", "72.15.Rn", "72.25.Rb" ], "keywords": [ "two-dimensional transition metal dichalcogenides", "quantum transport regimes", "spin-valley relaxation", "density-independent spin diffusion length", "hexagonal transition metal dichalcogenides" ], "tags": [ "journal article" ], "publication": { "doi": "10.1103/PhysRevB.90.235429", "journal": "Physical Review B", "year": 2014, "month": "Dec", "volume": 90, "number": 23, "pages": 235429 }, "note": { "typesetting": "TeX", "pages": 12, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2014PhRvB..90w5429O" } } }