000071008 001__ 71008
000071008 005__ 20180622124306.0
000071008 0247_ $$2doi$$a10.1103/PhysRevB.90.155128
000071008 0248_ $$2sideral$$a88560
000071008 037__ $$aART-2014-88560
000071008 041__ $$aeng
000071008 100__ $$0(orcid)0000-0002-6425-024X$$aStankiewicz, Jolanta$$uUniversidad de Zaragoza
000071008 245__ $$aElectrical transport properties of CaB6
000071008 260__ $$c2014
000071008 5060_ $$aAccess copy available to the general public$$fUnrestricted
000071008 5203_ $$aWe report results from a systematic electron-transport study in a broad temperature range on 12 CaB6 single crystals. None of the crystals were intentionally doped. The different carrier densities observed presumably arise from slight variations in the Ca:B stoichiometry. In these crystals, the variation of the electrical resistivity and of the Hall effect with temperature can be consistently accounted for by the model we propose, in which B-antisite defects (B atom replacing Ca atom) are “amphoteric.” The magnetotransport measurements reveal that most of the samples we have studied are close to a metal-insulator transition at low temperatures. The magnetoresistance changes smoothly from negative—for weakly metallic samples—to positive values—for samples in a localized regime.
000071008 536__ $$9info:eu-repo/grantAgreement/ES/DGA/CAMRADS$$9info:eu-repo/grantAgreement/ES/MINECO/MAT2012-38213-C02-01
000071008 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000071008 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000071008 700__ $$0(orcid)0000-0002-7742-9329$$aSesé Monclús, Javier$$uUniversidad de Zaragoza
000071008 700__ $$aBalakrishnan, Geetha
000071008 700__ $$aFisk, Zachary
000071008 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDepartamento de Física de la Materia Condensada$$cFísica de la Materia Condensada
000071008 773__ $$g90 (2014), 155128 [5 pp]$$pPhys. rev., B Condens. matter$$tPhysical review. B, Condensed matter$$x0163-1829
000071008 8564_ $$s522589$$uhttp://zaguan.unizar.es/record/71008/files/texto_completo.pdf$$yVersión publicada
000071008 8564_ $$s131929$$uhttp://zaguan.unizar.es/record/71008/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000071008 909CO $$ooai:zaguan.unizar.es:71008$$particulos$$pdriver
000071008 951__ $$a2018-06-22-11:08:22
000071008 980__ $$aARTICLE