Experimental and theoretical study of the correlated compound YbCdSn: Evidence for large magnetoresistance and mass enhancement

Laha, A. and Kanchana, V. and et al, . (2020) Experimental and theoretical study of the correlated compound YbCdSn: Evidence for large magnetoresistance and mass enhancement. Physical Review B, 102 (23). ISSN 2469-9950

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Abstract

The unusual features of topological semimetals arise from its nontrivial band structure. The impact of strong electron correlations on the topological states remains largely unexplored in real materials. Here, we report the magnetotransport properties of YbCdSn single crystals. We found two fundamental experimental evidences of electron correlations through magnetic susceptibility and specific heat. The electron correlations in this compound lead to an intermediate valence state and enhance the effective mass of the charge carriers. This correlated state exhibits large nonsaturating magnetoresistance, low carrier density, magnetic field-induced metal-semiconductor-like crossover and a plateau in resistivity at low temperatures. This compound also shows a cusp-like magnetoconductivity at low magnetic field which indicates the presence of weak antilocalization effect. Our band structure calculations of Yb2+ state predict YbCdSn to be a topological nodal-line semimetal.

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IITH Creators:

IITH Creators	ORCiD
Kanchana, Venkatakrishanan	UNSPECIFIED

Item Type:

Article

Uncontrolled Keywords:

Band structure calculation; Experimental evidence; Intermediate valence; Magneto transport properties; Magneto-conductivity; Metal semiconductors; Strong electron correlations; Weak antilocalization

Subjects:

Physics

Divisions:

Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

16 Jul 2021 05:55

Last Modified:

18 Feb 2022 10:14

URI:

http://raiithold.iith.ac.in/id/eprint/8345