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000156053 0247_ $$2doi$$a10.1088/0953-8984/26/39/394004
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000156053 1001_ $$0P:(DE-HGF)0$$aDecker, R.$$b0$$eCorresponding Author
000156053 245__ $$aLocal tunnel magnetoresistance of an iron intercalated graphene-based heterostructure
000156053 260__ $$aBristol$$bIOP Publ.$$c2014
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000156053 520__ $$aThe lateral variation of the tunnel magnetoresistance (TMR) of a graphene-based vertical heterostructure is studied by spin-polarized scanning tunneling microscopy (SP–STM) using an Fe-coated probe tip. The well-defined heterostructure is obtained by the intercalation of a magnetic Fe monolayer at the graphene/Ir(1 1 1) interface. Its structure is characterized by a moiré pattern with a high corrugation. In contrast to the Fe / Ir(1 1 1) surface, graphene/Fe / Ir(1 1 1) exhibits ferromagnetic order with an out-of-plane easy magnetization axis. At the nanometer scale, our experiments reveal that the moiré pattern induces a lateral variation of the TMR, which reaches 80%. The measured TMR at valleys of the moiré pattern is higher than at hills. We interpret this modulation in terms of a different hybridization between graphene and Fe at valleys and hills due to a different graphene–Fe distance at these sites, which leads to a different transmission of spin-polarized states
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000156053 7001_ $$0P:(DE-HGF)0$$aBazarnik, M.$$b1
000156053 7001_ $$0P:(DE-Juel1)130513$$aAtodiresei, N.$$b2$$ufzj
000156053 7001_ $$0P:(DE-Juel1)130583$$aCaciuc, V.$$b3$$ufzj
000156053 7001_ $$0P:(DE-Juel1)130548$$aBlügel, S.$$b4$$ufzj
000156053 7001_ $$0P:(DE-HGF)0$$aWiesendanger, R.$$b5
000156053 773__ $$0PERI:(DE-600)1472968-4$$a10.1088/0953-8984/26/39/394004$$gVol. 26, no. 39, p. 394004 -$$n39$$p394004$$tJournal of physics / Condensed matter$$v26$$x1361-648X$$y2014
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000156053 9141_ $$y2014
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