Normal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb<sub>4</sub> single crystals: a potential Weyl-semimetal superconductor candidate

Wang, Limin; Lin, Sheng-En; Shen, Dong; Chen, I-Nan

doi:10.1088/1367-2630/ac231b

Cited by 4 publications

(1 citation statement)

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“…Thus, the binary compound of platinum with a heavy tetrel (group 14 element), Pb–PtPb 4 —has been recently identified as a potential Weyl-semimetal superconductor candidate. The superconducting transition temperature ( T c ) of PtPb 4 is about 2.8 K. 12 Another example is the Pd compound with a heavy pnictogen (group 15 element), Bi–PdBi—which exhibits Dirac surface states in the presence of superconductivity ( T c = 3.8 K). 13 In general, superconducting properties are often observed for intermetallic phases containing noble metals and heavy p -elements.…”

Section: Introductionmentioning

confidence: 99%

Flux Growth, Crystal Structures, and Electronic Properties of the Ternary Intermetallic Compounds Ca₃Pd₄Bi₈ and Ca₃Pt₄Bi₈

Ovchinnikov

Mudring

2022

Inorg. Chem.

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Reaction of the elements yielded Ca 3 Pt 4 Bi 8 and CaPtBi, which are, to the best of our knowledge, the first reported ternary Ca–Pt–Bi compounds. The compounds crystallize isostructural to the Pd analogs Ca 3 Pd 4 Bi 8 (own structure type) and CaPdBi (TiNiSi structure type), respectively. Employing a multistep temperature treatment allows for the growth of mm-sized single crystals of Ca 3 Pd 4 Bi 8 and Ca 3 Pt 4 Bi 8 from a Bi self-flux. Their crystal structures can be visualized as consisting of a three-dimensional extended polyanion [M 4 Bi 8 ] 6– (M = Pd, Pt), composed of interlinked M–Bi chains propagating along the c direction, and Ca 2+ cations residing in one-dimensional channels between the chains. First-principles calculations reveal quasi-one-dimensional electronic behavior with reduced effective electron masses along [001]. Bader analysis points to a strong anionic character of the M species (M = Pd, Pt) in Ca 3 M 4 Bi 8 . Thus, it is more appropriate to address the compounds Ca 3 Pd 4 Bi 8 and Ca 3 Pt 4 Bi 8 as a palladide and platinide, respectively. Magnetization measurements indicate diamagnetic behavior with no indications for superconductivity down to 2 K. Electrical resistivity data are consistent with metallic behavior and suggest predominant electron–phonon scattering.

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Section: Introductionmentioning

confidence: 99%

Flux Growth, Crystal Structures, and Electronic Properties of the Ternary Intermetallic Compounds Ca₃Pd₄Bi₈ and Ca₃Pt₄Bi₈

Ovchinnikov

Mudring

2022

Inorg. Chem.

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Magnetotransport properties of the topological semimetal SrAgBi

Hooda

Pavlosiuk²,

Hossain³

et al. 2022

Phys. Rev. B

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Unusual magnetotransport and surface Dirac-cone state in single-crystalline Pt 3 Te 4 : a new candidate of Dirac semimetal

Hsu

Chen

Kuo

et al. 2023

Preprint

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Exotic magnetotransport and magnetization properties of Pt3Te4 single crystals were investigated to probe the topological properties of the Pt3Te4 semimetal. Pt3Te4 reveals a strongly correlated electronic feature as well as a non-trivial magnetoresistance (MR) characteristic. The signature of helical spin texture from the topological surface state and the chiral anomaly associated with a linear-like energy dispersion of electronic states were detected. At low temperatures, the negative longitudinal magnetoresistance in the low-field region could be explained with the transport formula containing the chiral-anomaly effect as well as the weak antilocalization transport. Moreover, the high-field transverse magnetoresistance at temperatures below 60 K showed a non-saturating linear-like behavior, which was examined with the theory of Abrikosov’s quantum MR, indicating a Dirac-cone-like dispersion in Pt3Te4 at low temperatures. This work reveals the drastic impact of the concept that the magnetotransport in Pt3Te4 can be dominated by the surface electrons in a Dirac fermion state, thus inferring that Pt3Te4 is a new candidate of Dirac semimetal.

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Normal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb₄ single crystals: a potential Weyl-semimetal superconductor candidate

Cited by 4 publications

References 58 publications

Flux Growth, Crystal Structures, and Electronic Properties of the Ternary Intermetallic Compounds Ca₃Pd₄Bi₈ and Ca₃Pt₄Bi₈

Flux Growth, Crystal Structures, and Electronic Properties of the Ternary Intermetallic Compounds Ca₃Pd₄Bi₈ and Ca₃Pt₄Bi₈

Magnetotransport properties of the topological semimetal SrAgBi

Unusual magnetotransport and surface Dirac-cone state in single-crystalline Pt 3 Te 4 : a new candidate of Dirac semimetal

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Normal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb4 single crystals: a potential Weyl-semimetal superconductor candidate

Cited by 4 publications

References 58 publications

Flux Growth, Crystal Structures, and Electronic Properties of the Ternary Intermetallic Compounds Ca3Pd4Bi8 and Ca3Pt4Bi8

Flux Growth, Crystal Structures, and Electronic Properties of the Ternary Intermetallic Compounds Ca3Pd4Bi8 and Ca3Pt4Bi8

Magnetotransport properties of the topological semimetal SrAgBi

Unusual magnetotransport and surface Dirac-cone state in single-crystalline Pt 3 Te 4 : a new candidate of Dirac semimetal

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Product

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Normal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb₄ single crystals: a potential Weyl-semimetal superconductor candidate

Flux Growth, Crystal Structures, and Electronic Properties of the Ternary Intermetallic Compounds Ca₃Pd₄Bi₈ and Ca₃Pt₄Bi₈

Flux Growth, Crystal Structures, and Electronic Properties of the Ternary Intermetallic Compounds Ca₃Pd₄Bi₈ and Ca₃Pt₄Bi₈