2D weak anti-localization in thin films of the topological semimetal Pd $$_{3}$$ 3 Bi $$_{2}$$ 2 S $$_{2}$$ 2

2D weak anti-localization in thin films of the topological semimetal Pd $$_{3}$$ 3 Bi $$_{2}$$ 2 S $$_{2}$$ 2

Abstract Pd $$_{3}$$ 3 Bi $$_{2}$$ 2 S $$_{2}$$ 2 (PBS) is a recently proposed topological semimetal candidate. However, evidence for topological surface states have not yet been revealed in transport measurements due to the large mobility of bulk carriers. We report the growth and magneto-transport...

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Autores principales: Shama, R. K. Gopal, Goutam Sheet, Yogesh Singh
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/d7445e287f9c4e628017a15e36295fe3
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spelling oai:doaj.org-article:d7445e287f9c4e628017a15e36295fe32021-12-02T16:04:26Z2D weak anti-localization in thin films of the topological semimetal Pd $$_{3}$$ 3 Bi $$_{2}$$ 2 S $$_{2}$$ 210.1038/s41598-021-91930-92045-2322https://doaj.org/article/d7445e287f9c4e628017a15e36295fe32021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91930-9https://doaj.org/toc/2045-2322Abstract Pd $$_{3}$$ 3 Bi $$_{2}$$ 2 S $$_{2}$$ 2 (PBS) is a recently proposed topological semimetal candidate. However, evidence for topological surface states have not yet been revealed in transport measurements due to the large mobility of bulk carriers. We report the growth and magneto-transport studies of PBS thin films where the mobility of the bulk carriers is reduced by two orders of magnitude, revealing for the first time, contributions from the 2-dimensional (2D) topological surface states in the observation of the 2D weak anti-localization (WAL) effect in magnetic field and angle dependent conductivity measurements. The magnetotransport data is analysed within the 2D Hikami-Larkin-Nagaoka (HLN) theory. The analysis suggests that multiple conduction channels contribute to the transport. It is also found that the temperature dependence of the dephasing length can’t be explained only by electron-electron scattering and that electron-phonon scattering also contributes to the phase relaxation mechanism in PBS films.ShamaR. K. GopalGoutam SheetYogesh SinghNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Shama
R. K. Gopal
Goutam Sheet
Yogesh Singh
2D weak anti-localization in thin films of the topological semimetal Pd $$_{3}$$ 3 Bi $$_{2}$$ 2 S $$_{2}$$ 2
description Abstract Pd $$_{3}$$ 3 Bi $$_{2}$$ 2 S $$_{2}$$ 2 (PBS) is a recently proposed topological semimetal candidate. However, evidence for topological surface states have not yet been revealed in transport measurements due to the large mobility of bulk carriers. We report the growth and magneto-transport studies of PBS thin films where the mobility of the bulk carriers is reduced by two orders of magnitude, revealing for the first time, contributions from the 2-dimensional (2D) topological surface states in the observation of the 2D weak anti-localization (WAL) effect in magnetic field and angle dependent conductivity measurements. The magnetotransport data is analysed within the 2D Hikami-Larkin-Nagaoka (HLN) theory. The analysis suggests that multiple conduction channels contribute to the transport. It is also found that the temperature dependence of the dephasing length can’t be explained only by electron-electron scattering and that electron-phonon scattering also contributes to the phase relaxation mechanism in PBS films.
format article
author Shama
R. K. Gopal
Goutam Sheet
Yogesh Singh
author_facet Shama
R. K. Gopal
Goutam Sheet
Yogesh Singh
author_sort Shama
title 2D weak anti-localization in thin films of the topological semimetal Pd $$_{3}$$ 3 Bi $$_{2}$$ 2 S $$_{2}$$ 2
title_short 2D weak anti-localization in thin films of the topological semimetal Pd $$_{3}$$ 3 Bi $$_{2}$$ 2 S $$_{2}$$ 2
title_full 2D weak anti-localization in thin films of the topological semimetal Pd $$_{3}$$ 3 Bi $$_{2}$$ 2 S $$_{2}$$ 2
title_fullStr 2D weak anti-localization in thin films of the topological semimetal Pd $$_{3}$$ 3 Bi $$_{2}$$ 2 S $$_{2}$$ 2
title_full_unstemmed 2D weak anti-localization in thin films of the topological semimetal Pd $$_{3}$$ 3 Bi $$_{2}$$ 2 S $$_{2}$$ 2
title_sort 2d weak anti-localization in thin films of the topological semimetal pd $$_{3}$$ 3 bi $$_{2}$$ 2 s $$_{2}$$ 2
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/d7445e287f9c4e628017a15e36295fe3
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AT rkgopal 2dweakantilocalizationinthinfilmsofthetopologicalsemimetalpd33bi22s22
AT goutamsheet 2dweakantilocalizationinthinfilmsofthetopologicalsemimetalpd33bi22s22
AT yogeshsingh 2dweakantilocalizationinthinfilmsofthetopologicalsemimetalpd33bi22s22
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