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000825175 1001_ $$0P:(DE-HGF)0$$aOyarzún, S.$$b0$$eCorresponding author
000825175 245__ $$aEvidence for spin-to-charge conversion by Rashba coupling in metallic states at the Fe/Ge(111) interface3
000825175 260__ $$aLondon$$bNature Publishing Group$$c2016
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000825175 520__ $$aThe spin–orbit coupling relating the electron spin and momentum allows for spin generation, detection and manipulation. It thus fulfils the three basic functions of the spin field-effect transistor. However, the spin Hall effect in bulk germanium is too weak to produce spin currents, whereas large Rashba effect at Ge(111) surfaces covered with heavy metals could generate spin-polarized currents. The Rashba spin splitting can actually be as large as hundreds of meV. Here we show a giant spin-to-charge conversion in metallic states at the Fe/Ge(111) interface due to the Rashba coupling. We generate very large charge currents by direct spin pumping into the interface states from 20 K to room temperature. The presence of these metallic states at the Fe/Ge(111) interface is demonstrated by first-principles electronic structure calculations. By this, we demonstrate how to take advantage of the spin–orbit coupling for the development of the spin field-effect transistor.
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000825175 7001_ $$0P:(DE-Juel1)157778$$aNandy, A. K.$$b1$$ufzj
000825175 7001_ $$0P:(DE-HGF)0$$aRortais, F.$$b2
000825175 7001_ $$0P:(DE-HGF)0$$aRojas-Sánchez, J.-C.$$b3
000825175 7001_ $$0P:(DE-HGF)0$$aDau, M.-T.$$b4
000825175 7001_ $$0P:(DE-HGF)0$$aNoël, P.$$b5
000825175 7001_ $$0P:(DE-HGF)0$$aLaczkowski, P.$$b6
000825175 7001_ $$0P:(DE-HGF)0$$aPouget, S.$$b7
000825175 7001_ $$0P:(DE-HGF)0$$aOkuno, H.$$b8
000825175 7001_ $$0P:(DE-HGF)0$$aVila, L.$$b9
000825175 7001_ $$0P:(DE-HGF)0$$aVergnaud, C.$$b10
000825175 7001_ $$0P:(DE-HGF)0$$aBeigné, C.$$b11
000825175 7001_ $$00000-0001-5709-6945$$aMarty, A.$$b12
000825175 7001_ $$0P:(DE-HGF)0$$aAttané, J.-P.$$b13
000825175 7001_ $$0P:(DE-HGF)0$$aGambarelli, S.$$b14
000825175 7001_ $$0P:(DE-HGF)0$$aGeorge, J.-M.$$b15
000825175 7001_ $$0P:(DE-Juel1)136871$$aJaffrès, H.$$b16
000825175 7001_ $$0P:(DE-Juel1)130548$$aBlügel, S.$$b17$$ufzj
000825175 7001_ $$0P:(DE-HGF)0$$aJamet, M.$$b18
000825175 773__ $$0PERI:(DE-600)2553671-0$$a10.1038/ncomms13857$$gVol. 7, p. 13857 -$$p13857$$tNature Communications$$v7$$x2041-1723$$y2016
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