000189306 001__ 189306
000189306 005__ 20210129215336.0
000189306 037__ $$aFZJ-2015-02484
000189306 041__ $$aEnglish
000189306 1001_ $$0P:(DE-Juel1)157882$$aRüssmann, Philipp$$b0$$eCorresponding Author$$ufzj
000189306 1112_ $$a584. WE-Heraeus-Seminar on 'Green's Functions in ab initio Electronic Structure Calculations of Solids: From Implementations to Applications''$$cBad Honnef$$d2015-02-09 - 2015-02-11$$wGermany
000189306 245__ $$aKKR-Green function approach to time-reversal scattering off surface impurities in Bi$_2$Te$_3$
000189306 260__ $$c2015
000189306 3367_ $$0PUB:(DE-HGF)24$$2PUB:(DE-HGF)$$aPoster$$bposter$$mposter$$s1430372820_14042$$xOther
000189306 3367_ $$033$$2EndNote$$aConference Paper
000189306 3367_ $$2DataCite$$aOutput Types/Conference Poster
000189306 3367_ $$2DRIVER$$aconferenceObject
000189306 3367_ $$2ORCID$$aCONFERENCE_POSTER
000189306 3367_ $$2BibTeX$$aINPROCEEDINGS
000189306 520__ $$aIn structure inversion-asymmetric environments such as surfaces and interfaces the spin of quasiparticles can have a profound effect on their interference. Quasiparticle interference patterns measured typically by scanning tunneling microscopy are not related in a trivial way to the dispersion of the electronic states. In fact, for Bi(110) [1] it could be shown that the observed interference patterns can be interpreted only by taking spin-conserving scattering events into account. In this contribution we go one step further and include explicitly in the analysis the scattering of the helical surface state electrons off single non-magnetic and magnetic impurities at the surface of the strong topological insulator Bi2Te3. As a matter of principle, magnetic impurities at surfaces break the protection against backscattering. We study this loss of protection by density-functional calculations of the quasiparticle interference at surfaces due to scattering, taking into account time-reversed transitions caused by the magnetic moment. Finally we will also comment on the effect of impurities in the bulk with a focus on the emergence of impurity bands. In our calculations we employ the KKR-Green function method for the electronic structure and scattering properties at defects [2, 3]. We acknowledge financial support from the DFG (SPP-1666) and from the VITI project  (DBB01126) of the Helmholtz Association and computational support from the JARA-HPC Supercomputing Centre at the RWTH Aachen University. References       [1]     J.I. Pascual, G. Bihlmayer, Yu. M. Koroteev, H.-P. Rust, G. Ceballos, M. Hansmann, K. Horn, E. V. Chulkov, S. Blügel, P. M. Echenique, and Ph. Hofmann Phys. Rev. Lett. 93, 196802 (2004)       [2]     S. Heers, PhD Thesis, RWTH Aachen (2011); D.S.G. Bauer, PhD Thesis, RWTH Aachen (2013), B. Zimmerman, PhD Thesis, RWTH Aachen (2014)       [3]     N. H. Long, P. Mavropoulos, B. Zimmermann, D. S. G. Bauer, S. Blügel, and Y. Mokrousov, Phys. Rev. B 90, 064406 (2014)
000189306 536__ $$0G:(DE-HGF)POF3-142$$a142 - Controlling Spin-Based Phenomena (POF3-142)$$cPOF3-142$$fPOF III$$x0
000189306 536__ $$0G:(DE-HGF)POF3-143$$a143 - Controlling Configuration-Based Phenomena (POF3-143)$$cPOF3-143$$fPOF III$$x1
000189306 65027 $$0V:(DE-MLZ)SciArea-120$$2V:(DE-HGF)$$aCondensed Matter Physics$$x0
000189306 65027 $$0V:(DE-MLZ)SciArea-180$$2V:(DE-HGF)$$aMaterials Science$$x1
000189306 7001_ $$0P:(DE-Juel1)162159$$aAboulouz, Emad$$b1$$ufzj
000189306 7001_ $$0P:(DE-Juel1)143632$$aLong, Nguyen Hoang$$b2$$ufzj
000189306 7001_ $$0P:(DE-Juel1)130823$$aMavropoulos, Phivos$$b3$$ufzj
000189306 7001_ $$0P:(DE-Juel1)130548$$aBlügel, Stefan$$b4$$ufzj
000189306 773__ $$y2015
000189306 909CO $$ooai:juser.fz-juelich.de:189306$$pVDB
000189306 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)157882$$aForschungszentrum Jülich GmbH$$b0$$kFZJ
000189306 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)162159$$aForschungszentrum Jülich GmbH$$b1$$kFZJ
000189306 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)143632$$aForschungszentrum Jülich GmbH$$b2$$kFZJ
000189306 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130823$$aForschungszentrum Jülich GmbH$$b3$$kFZJ
000189306 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130548$$aForschungszentrum Jülich GmbH$$b4$$kFZJ
000189306 9130_ $$0G:(DE-HGF)POF2-422$$1G:(DE-HGF)POF2-420$$2G:(DE-HGF)POF2-400$$aDE-HGF$$bSchlüsseltechnologien$$lGrundlagen für zukünftige Informationstechnologien$$vSpin-based and quantum information$$x0
000189306 9131_ $$0G:(DE-HGF)POF3-142$$1G:(DE-HGF)POF3-140$$2G:(DE-HGF)POF3-100$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bEnergie$$lFuture Information Technology - Fundamentals, Novel Concepts and Energy Efficiency (FIT)$$vControlling Spin-Based Phenomena$$x0
000189306 9131_ $$0G:(DE-HGF)POF3-143$$1G:(DE-HGF)POF3-140$$2G:(DE-HGF)POF3-100$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bEnergie$$lFuture Information Technology - Fundamentals, Novel Concepts and Energy Efficiency (FIT)$$vControlling Configuration-Based Phenomena$$x1
000189306 9141_ $$y2015
000189306 920__ $$lyes
000189306 9201_ $$0I:(DE-Juel1)IAS-1-20090406$$kIAS-1$$lQuanten-Theorie der Materialien$$x0
000189306 9201_ $$0I:(DE-Juel1)PGI-1-20110106$$kPGI-1$$lQuanten-Theorie der Materialien$$x1
000189306 9201_ $$0I:(DE-82)080009_20140620$$kJARA-FIT$$lJARA-FIT$$x2
000189306 980__ $$aposter
000189306 980__ $$aVDB
000189306 980__ $$aI:(DE-Juel1)IAS-1-20090406
000189306 980__ $$aI:(DE-Juel1)PGI-1-20110106
000189306 980__ $$aI:(DE-82)080009_20140620
000189306 980__ $$aUNRESTRICTED
000189306 981__ $$aI:(DE-Juel1)PGI-1-20110106