Superconductivity in the half-Heusler compound TbPdBi

H. Xiao, T. Hu, W. Liu, Y.L. Zhu, P.G. Li, G. Mu, J. Su, K. Li, Z.Q. Mao

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Abstract

We have studied the half-Heusler compound TbPdBi through resistivity, magnetization, Hall effect, and heat capacity measurements. A semimetal behavior is observed in its normal-state transport properties, which is characterized by a large negative magnetoresistance below 100 K. Notably, we find the coexistence of superconductivity and antiferromagnetism in this compound. The superconducting transition appears at 1.7 K, while the antiferromagnetic phase transition takes place at 5.5 K. The upper critical field Hc2 shows an unusual linear temperature dependence, implying unconventional superconductivity. Moreover, when the superconductivity is suppressed by magnetic field, its resistivity shows plateau behavior, a signature often seen in topological insulators/semimetals. These findings establish TbPdBi as a platform for the study of the interplay between superconductivity, magnetism, and nontrivial band topology. \ 2018 American Physical Society.
Original languageEnglish
JournalPhysical Review B
Volume97
Issue number22
DOIs
StatePublished - 2018

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superconductivity
metalloids
electrical resistivity
antiferromagnetism
Hall effect
plateaus
topology
platforms
transport properties
signatures
insulators
specific heat
magnetization
temperature dependence
magnetic fields

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Xiao, H. ; Hu, T. ; Liu, W. ; Zhu, Y.L. ; Li, P.G. ; Mu, G. ; Su, J. ; Li, K. ; Mao, Z.Q. / Superconductivity in the half-Heusler compound TbPdBi. In: Physical Review B. 2018 ; Vol. 97, No. 22.
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Superconductivity in the half-Heusler compound TbPdBi. / Xiao, H.; Hu, T.; Liu, W.; Zhu, Y.L.; Li, P.G.; Mu, G.; Su, J.; Li, K.; Mao, Z.Q.

In: Physical Review B, Vol. 97, No. 22, 2018.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Xiao, H.

AU - Hu, T.

AU - Liu, W.

AU - Zhu, Y.L.

AU - Li, P.G.

AU - Mu, G.

AU - Su, J.

AU - Li, K.

AU - Mao, Z.Q.

N1 - cited By 4

PY - 2018

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N2 - We have studied the half-Heusler compound TbPdBi through resistivity, magnetization, Hall effect, and heat capacity measurements. A semimetal behavior is observed in its normal-state transport properties, which is characterized by a large negative magnetoresistance below 100 K. Notably, we find the coexistence of superconductivity and antiferromagnetism in this compound. The superconducting transition appears at 1.7 K, while the antiferromagnetic phase transition takes place at 5.5 K. The upper critical field Hc2 shows an unusual linear temperature dependence, implying unconventional superconductivity. Moreover, when the superconductivity is suppressed by magnetic field, its resistivity shows plateau behavior, a signature often seen in topological insulators/semimetals. These findings establish TbPdBi as a platform for the study of the interplay between superconductivity, magnetism, and nontrivial band topology. \ 2018 American Physical Society.

AB - We have studied the half-Heusler compound TbPdBi through resistivity, magnetization, Hall effect, and heat capacity measurements. A semimetal behavior is observed in its normal-state transport properties, which is characterized by a large negative magnetoresistance below 100 K. Notably, we find the coexistence of superconductivity and antiferromagnetism in this compound. The superconducting transition appears at 1.7 K, while the antiferromagnetic phase transition takes place at 5.5 K. The upper critical field Hc2 shows an unusual linear temperature dependence, implying unconventional superconductivity. Moreover, when the superconductivity is suppressed by magnetic field, its resistivity shows plateau behavior, a signature often seen in topological insulators/semimetals. These findings establish TbPdBi as a platform for the study of the interplay between superconductivity, magnetism, and nontrivial band topology. \ 2018 American Physical Society.

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