000070876 001__ 70876
000070876 005__ 20191113135212.0
000070876 0247_ $$2doi$$a10.1021/acs.nanolett.7b00311
000070876 0248_ $$2sideral$$a92213
000070876 037__ $$aART-2017-92213
000070876 041__ $$aeng
000070876 100__ $$aMartínez Velarte, Maria del Carmen
000070876 245__ $$aChemical disorder in topological insulators: A route to magnetism tolerant Topological surface States
000070876 260__ $$c2017
000070876 5060_ $$aAccess copy available to the general public$$fUnrestricted
000070876 5203_ $$aWe show that the chemical inhomogeneity in ternary 3D topological insulators preserves the topological spin texture of their surface states against a net surface magnetization. The spin texture is that of a Dirac cone with helical spin structure in the reciprocal space, which gives rise to spin-polarized and dissipation-less charge currents. Thanks to the non-trivial topology of the bulk electronic structure, this spin texture is robust against most types of surface defects. However, magnetic perturbations break the time-reversal symmetry, enabling magnetic scattering and loss of spin coherence of the charge carriers. This intrinsic incompatibility precludes the design of magnetoelectronic devices based on the coupling between magnetic materials and topological surface states. We demonstrate that the magnetization coming from individual Co atoms deposited on the surface can disrupt the spin coherence of the carriers in the archetypal topological insulator Bi2Te3, while in Bi2Se2Te the spin texture remains unperturbed. This is concluded from the observation of elastic backscattering events in quasiparticle interference patterns obtained by scanning tunneling spectroscopy. The mechanism responsible for the protection is investigated by energy resolved spectroscopy and ab-initio calculations, and it is ascribed to the distorted adsorption geometry of localized magnetic moments due to Se-Te disorder, which suppresses the Co hybridization with the surface states
000070876 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/MAT2013-46593-C6-3-P$$9info:eu-repo/grantAgreement/ES/MINECO/MAT2013-46593-C6-2-P$$9info:eu-repo/grantAgreement/EC/FP7/304043/EU/High Performance Energy Conversion by the interplay between Thermoelectricity and Spin Seebeck Effect/THERMO-SPINTRONIC$$9info:eu-repo/grantAgreement/ES/DGA/E26
000070876 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000070876 590__ $$a12.08$$b2017
000070876 591__ $$aCHEMISTRY, PHYSICAL$$b11 / 146 = 0.075$$c2017$$dQ1$$eT1
000070876 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b19 / 285 = 0.067$$c2017$$dQ1$$eT1
000070876 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b10 / 92 = 0.109$$c2017$$dQ1$$eT1
000070876 591__ $$aPHYSICS, CONDENSED MATTER$$b8 / 67 = 0.119$$c2017$$dQ1$$eT1
000070876 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b15 / 171 = 0.088$$c2017$$dQ1$$eT1
000070876 591__ $$aPHYSICS, APPLIED$$b9 / 146 = 0.062$$c2017$$dQ1$$eT1
000070876 592__ $$a7.447$$b2017
000070876 593__ $$aBioengineering$$c2017$$dQ1
000070876 593__ $$aChemistry (miscellaneous)$$c2017$$dQ1
000070876 593__ $$aNanoscience and Nanotechnology$$c2017$$dQ1
000070876 593__ $$aMaterials Science (miscellaneous)$$c2017$$dQ1
000070876 593__ $$aMechanical Engineering$$c2017$$dQ1
000070876 593__ $$aCondensed Matter Physics$$c2017$$dQ1
000070876 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000070876 700__ $$aKretz, Bernhard
000070876 700__ $$0(orcid)0000-0003-4180-0752$$aMoro-Lagares, María
000070876 700__ $$0(orcid)0000-0002-1296-4793$$aAguirre, Myriam Haydee$$uUniversidad de Zaragoza
000070876 700__ $$aRiedemann, Trevor M.
000070876 700__ $$aLograsso, Thomas A.
000070876 700__ $$0(orcid)0000-0003-3724-508X$$aMorellon, Luis$$uUniversidad de Zaragoza
000070876 700__ $$0(orcid)0000-0003-0681-8260$$aIbarra, M Ricardo$$uUniversidad de Zaragoza
000070876 700__ $$aGarcia-Lekue, Aran
000070876 700__ $$0(orcid)0000-0002-3260-9641$$aSerrate, David$$uUniversidad de Zaragoza
000070876 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000070876 773__ $$g17, 7 (2017), 4047-4054$$pNano lett.$$tNano Letters$$x1530-6984
000070876 8564_ $$s1190212$$uhttps://zaguan.unizar.es/record/70876/files/texto_completo.pdf$$yPostprint
000070876 8564_ $$s55353$$uhttps://zaguan.unizar.es/record/70876/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000070876 909CO $$ooai:zaguan.unizar.es:70876$$particulos$$pdriver
000070876 951__ $$a2019-11-13-13:44:44
000070876 980__ $$aARTICLE