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Reply to "Comment on 'Instability of the topological surface state in Bi2Se3 upon deposition of gold'"
Max Planck Inst Mikrostrukturphys, Weinberg 2, D-06120 Halle, Germany..
Max Planck Inst Mikrostrukturphys, Weinberg 2, D-06120 Halle, Germany.;Forschungszentrum Julich, Peter Grunberg Inst PGI 6, D-52425 Julich, Germany..
Max Planck Inst Mikrostrukturphys, Weinberg 2, D-06120 Halle, Germany.;Johannes Gutenberg Univ Mainz, Inst Phys, Staudingerweg 7, D-55116 Mainz, Germany..
Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada..
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2018 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 98, no 13, article id 136202Article in journal (Refereed) Published
Abstract [en]

In the Comment on our publication [Phys. Rev. B 95, 180202(R) (2017)], R. A. Gordon claims that our main conclusion is not valid, namely that gold atoms deposited in situ on the (0001) surface of single-crystalline Bi2Se3 reside in substitutional sites, i.e., replacing bismuth atoms within the topmost quintuple layer (QL). Based on x-ray absorption near-edge (XANES) spectra and a re-evaluation of extended x-ray absorption fine structure (EXAFS) data above the Au L-III edge, R. A. Gordon concludes that Au resides in a twofold environment as a result of an interface reaction leading to an Au2S-type local structure, in which gold adopts an Au(I) state and is linearly coordinated by selenium atoms. In this Reply, we will confirm the results published in the original paper and their interpretation that Au atoms reside in the substitutional site.

Place, publisher, year, edition, pages
American Physical Society, 2018. Vol. 98, no 13, article id 136202
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Chemical Sciences
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URN: urn:nbn:se:kth:diva-239086DOI: 10.1103/PhysRevB.98.136202ISI: 000448911800005OAI: oai:DiVA.org:kth-239086DiVA, id: diva2:1264897
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QC 20181121

Available from: 2018-11-21 Created: 2018-11-21 Last updated: 2018-11-21Bibliographically approved

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Geilhufe, Matthias

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