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000857661 1001_ $$0P:(DE-Juel1)157882$$aRüßmann, Philipp$$b0$$eCorresponding author
000857661 245__ $$aTowards microscopic control of the magnetic exchange coupling at the surface of a topological insulator
000857661 260__ $$aBristol$$bIOP Publishing$$c2018
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000857661 520__ $$aMagnetically doped topological insulators may produce novel states of electronic matter, where for instance the quantum anomalous Hall effect state can be realized. Pivotal to this goal is a microscopic control over the magnetic state, defined by the local electronic structure of the dopants and their interactions. We report on the magnetic coupling among Mn or Co atoms adsorbed on the surface of the topological insulator Bi2Te3. Our findings uncover the mechanisms of the exchange coupling between magnetic atoms coupled to the topological surface state in strong topological insulators. The combination of x-ray magnetic circular dichroism and ab initio calculations reveals that the sign of the magnetic coupling at short adatom–adatom distances is opposite for Mn with respect to Co. For both elements, the magnetic exchange reverses its sign at a critical distance between magnetic adatoms, as a result of the interplay between superexchange, double exchange and Ruderman–Kittel–Kasuya–Yoshida interactions.
000857661 536__ $$0G:(DE-HGF)POF3-142$$a142 - Controlling Spin-Based Phenomena (POF3-142)$$cPOF3-142$$fPOF III$$x0
000857661 536__ $$0G:(DE-HGF)POF3-143$$a143 - Controlling Configuration-Based Phenomena (POF3-143)$$cPOF3-143$$fPOF III$$x1
000857661 536__ $$0G:(DE-Juel1)jara0078_20131101$$aScattering of topologically protected states off defects in topological insulators (jara0078_20131101)$$cjara0078_20131101$$fScattering of topologically protected states off defects in topological insulators$$x2
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000857661 7001_ $$0P:(DE-HGF)0$$aMahatha, Sanjoy K$$b1
000857661 7001_ $$0P:(DE-HGF)0$$aSessi, Paolo$$b2
000857661 7001_ $$00000-0002-0585-5636$$aValbuena, Miguel A$$b3
000857661 7001_ $$0P:(DE-HGF)0$$aBathon, Thomas$$b4
000857661 7001_ $$0P:(DE-HGF)0$$aFauth, Kai$$b5
000857661 7001_ $$0P:(DE-HGF)0$$aGodey, Sylvie$$b6
000857661 7001_ $$00000-0002-2698-885X$$aMugarza, Aitor$$b7
000857661 7001_ $$0P:(DE-HGF)0$$aKokh, Konstantin A$$b8
000857661 7001_ $$0P:(DE-HGF)0$$aTereshchenko, Oleg E$$b9
000857661 7001_ $$00000-0002-6649-0538$$aGargiani, Pierluigi$$b10
000857661 7001_ $$00000-0003-4895-8114$$aValvidares, Manuel$$b11
000857661 7001_ $$0P:(DE-HGF)0$$aJiménez, Erika$$b12
000857661 7001_ $$00000-0002-1342-9530$$aBrookes, Nicholas B$$b13
000857661 7001_ $$0P:(DE-HGF)0$$aBode, Matthias$$b14
000857661 7001_ $$0P:(DE-Juel1)130545$$aBihlmayer, Gustav$$b15
000857661 7001_ $$0P:(DE-Juel1)130548$$aBlügel, Stefan$$b16$$ufzj
000857661 7001_ $$0P:(DE-Juel1)130823$$aMavropoulos, Phivos$$b17
000857661 7001_ $$0P:(DE-HGF)0$$aCarbone, Carlo$$b18
000857661 7001_ $$00000-0002-5632-4915$$aBarla, Alessandro$$b19$$eCorresponding author
000857661 773__ $$0PERI:(DE-600)2950970-1$$a10.1088/2515-7639/aad02a$$gVol. 1, no. 1, p. 015002 -$$n1$$p015002$$tJPhys materials$$v1$$x2515-7639$$y2018
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