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000837710 1001_ $$0P:(DE-HGF)0$$aKrivenkov, M.$$b0
000837710 245__ $$aNanostructural origin of giant Rashba effect in intercalated graphene
000837710 260__ $$aBristol$$bIOP Publ.$$c2017
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000837710 520__ $$aTo enhance the spin–orbit interaction in graphene by a proximity effect without compromising the quasi-free-standing dispersion of the Dirac cones means balancing the opposing demands for strong and weak graphene–substrate interaction. So far, only the intercalation of Au under graphene/Ni(1 1 1) has proven successful, which was unexpected since graphene prefers a large separation (~$3.3~{\mathring{\rm A}}$ ) from a Au monolayer in equilibrium. Here, we investigate this system and find the solution in a nanoscale effect. We reveal that the Au largely intercalates as nanoclusters. Our density functional theory calculations show that the graphene is periodically stapled to the Ni substrate, and this attraction presses graphene and Au nanoclusters together. This, in turn, causes a Rashba effect of the giant magnitude observed in experiment. Our findings show that nanopatterning of the substrate can be efficiently used for engineering of spin–orbit effects in graphene.
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000837710 7001_ $$0P:(DE-HGF)0$$aGolias, E.$$b1
000837710 7001_ $$0P:(DE-HGF)0$$aMarchenko, D.$$b2
000837710 7001_ $$0P:(DE-HGF)0$$aSánchez-Barriga, J.$$b3
000837710 7001_ $$0P:(DE-Juel1)130545$$aBihlmayer, G.$$b4
000837710 7001_ $$0P:(DE-HGF)0$$aRader, O.$$b5
000837710 7001_ $$0P:(DE-HGF)0$$aVarykhalov, A.$$b6$$eCorresponding author
000837710 773__ $$0PERI:(DE-600)2779376-X$$a10.1088/2053-1583/aa7ad8$$gVol. 4, no. 3, p. 035010 -$$n3$$p035010$$t2D Materials$$v4$$x2053-1583$$y2017
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