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arXiv · 2012.03464

Weak Anti-localization in thin films of the Topological Semimetal Candidate Pd$_{3}$Bi$_{2}$S$_{2}$

Shama·Goutam Sheet·Yogesh Singh
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Abstract

We report the growth and magneto-transport studies of Pd$_{3}$Bi$_{2}$S$_{2}$ (PBS) thin films synthesized by pulsed laser deposition (PLD) technique. The magneto-transport study on pristine and post annealed films show the presence of more than one type of charge carrier with a carrier concentration in the range $0.6$ - $2.26~\times$ 10$^{21}$ cm$^{-3}$ and mobility in the range 0.96 - 1.73 $\times$ 10$^{2}$ cm$^{2}$/Vs. At low temperatures a logarithmic increase in conductivity is observed which indicates the presence of weak anti-localization (WAL). The magnetotransport data is analysed within the Hikami-Larkin-Nagaoka (HLN) theory. It is found that 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.

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Shama, Goutam Sheet, Yogesh Singh. 2020-12-07. Weak Anti-localization in thin films of the Topological Semimetal Candidate Pd$_{3}$Bi$_{2}$S$_{2}$. https://arxiv.org/abs/2012.03464

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