Disorder-Promoted Splitting in Quasiparticle Interference at Nesting Vectors

Inelastic interactions of quantum systems with the environment usually wash coherent effects out. In the case of Friedel oscillations, the presence of disorder leads to a fast decay of the oscillation amplitude. Here we show both experimentally and theoretically that in three-dimensional topological...

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Bibliographic Details
Published in:	The journal of physical chemistry letters Vol. 12; no. 12; pp. 3127 - 3134
Main Authors:	Stolyarov, V. S, Sheina, V. A, Khokhlov, D. A, Vlaic, S, Pons, S, Aubin, H, Akzyanov, R. S, Vasenko, A. S, Menshchikova, T. V, Chulkov, E. V, Golubov, A. A, Cren, T, Roditchev, D
Format:	Journal Article
Language:	English
Published:	United States American Chemical Society 01-04-2021
Subjects:	Chemical Physics Condensed Matter Materials Science Physical Insights into Quantum Phenomena and Function Physics
Online Access:	Get full text
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Summary:	Inelastic interactions of quantum systems with the environment usually wash coherent effects out. In the case of Friedel oscillations, the presence of disorder leads to a fast decay of the oscillation amplitude. Here we show both experimentally and theoretically that in three-dimensional topological insulator Bi2Te3 there is a nesting-induced splitting of coherent scattering vectors which follows a peculiar evolution in energy. The effect becomes experimentally observable when the lifetime of quasiparticles shortens due to disorder. The amplitude of the splitting allows an evaluation of the lifetime of the electrons. A similar phenomenon should be observed in any system with a well-defined scattering vector regardless of its topological properties.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1948-7185 1948-7185
DOI:	10.1021/acs.jpclett.1c00462