In:
The Innovation Materials, Innovation Press Co., Limited, Vol. 1, No. 1 ( 2023), p. 100011-
Abstract:
〈 p 〉 Large negative magnetoresistance (NMR), an important property for spintronics, requires experimental realization owing to the lack of suitable structural motifs. Herein, a remarkable NMR of up to -15% under 9 T at 2 K is demonstrated in a 112-type topological insulator candidate CeCuAs 〈 sub 〉 2 〈 /sub 〉 single crystal containing an As square net. Due to the presence of Dirac points coming from both the As square net and Ce�CCu�CAs layer in the paramagnetic state of CeCuAs 〈 sub 〉 2 〈 /sub 〉 , the possibility of chiral anomaly is examined and eliminated by investigating magnetoresistance (MR) with different magnetic field configurations and angle-dependant MR, which show no specific restriction on the configurations under the applied magnetic fields. Upon investigation of the anisotropic magnetism, a spin-glass-like behavior with 〈 i 〉 T 〈 /i 〉 〈 sub 〉 〈 i 〉 f 〈 /i 〉 〈 /sub 〉 ~ 4.5 K is observed in CeCuAs 〈 sub 〉 2 〈 /sub 〉 , indicating that the large NMR could be attributed to the spin-dependent scattering induced by the possible spin-glass state. Hall resistivity exhibits a multiband feature and hole-dominated transport properties, corresponding well with the calculated band structure. This study not only offers a new building block for large NMR but also serves as a guide for the investigating the interplay among transport properties, topology, and magnetism, and it is expected to broaden the research on spintronics. 〈 /p 〉
Type of Medium:
Online Resource
ISSN:
2959-8737
DOI:
10.59717/j.xinn-mater.2023.100011
Language:
Unknown
Publisher:
Innovation Press Co., Limited
Publication Date:
2023
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