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Title: Superconductivity in the half-Heusler compound TbPdBi

Journal Article · · Physical Review B
 [1];  [2];  [3];  [4];  [4];  [2];  [5];  [1];  [4]
  1. Center for High Pressure Science and Technology Advanced Research, Beijing (China)
  2. Chinese Academy of Sciences, Shanghai (China); CAS Center for Excellence in Superconducting Electronics (CENSE), Shanghai (China)
  3. Center for High Pressure Science and Technology Advanced Research, Beijing (China); Zhejiang SCI-TECH University, Hangzhou (China)
  4. Tulane University, New Orleans, LA (United States)
  5. Peking University, Beijing (China)
+ Show Author Affiliations

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. Furthermore, these findings establish TbPdBi as a platform for the study of the interplay between superconductivity, magnetism, and nontrivial band topology.

Research Organization:
Louisiana State Univ., Baton Rouge, LA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); NSFC; NSAF
Grant/Contract Number:
SC0012432; 11574338; U1530402
OSTI ID:
1670461
Alternate ID(s):
OSTI ID: 1454347
Journal Information:
Physical Review B, Vol. 97, Issue 22; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

References (28)

Weak Antilocalization Effect and Noncentrosymmetric Superconductivity in a Topologically Nontrivial Semimetal LuPdBi journal July 2014
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Topological electronic structure in half-Heusler topological insulators journal September 2010
High electron mobility and large magnetoresistance in the half-Heusler semimetal LuPtBi journal December 2015
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Topological R PdBi half-Heusler semimetals: A new family of noncentrosymmetric magnetic superconductors journal June 2015
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Pairing States of Spin- 3 2 Fermions: Symmetry-Enforced Topological Gap Functions journal February 2018
Superconductivity and Shubnikov–de Haas oscillations in the noncentrosymmetric half-Heusler compound YPtBi journal July 2016
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Antiferromagnetism and superconductivity in the half-Heusler semimetal HoPdBi journal January 2016
Half-Heusler ternary compounds as new multifunctional experimental platforms for topological quantum phenomena journal May 2010
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Unconventional Superconductivity in YPtBi and Related Topological Semimetals journal April 2016
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Dirac cone and pseudogapped density of states in the topological half-Heusler compound YPtBi journal October 2016
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Magnetic and transport properties of rare-earth-based half-Heusler phases R PdBi: Prospective systems for topological quantum phenomena journal July 2011
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Unconventional Superconductivity in Luttinger Semimetals: Theory of Complex Tensor Order and the Emergence of the Uniaxial Nematic State journal February 2018
Superconductivity in the topological semimetal YPtBi journal December 2011
Beyond triplet: Unconventional superconductivity in a spin-3/2 topological semimetal journal April 2018
Resistivity plateau and extreme magnetoresistance in LaSb journal December 2015

Cited By (4)

Evidence for unconventional superconductivity in half-Heusler YPdBi and TbPdBi compounds revealed by London penetration depth measurements journal December 2018
First-principles investigations of orthorhombic-cubic phase transition and its effect on thermoelectric properties in cobalt-based ternary alloys journal November 2019
First-principles investigations of orthorhombic-cubic phase transition and its effect on thermoelectric properties in cobalt-based ternary alloys text January 2019
Long-lived nonequilibrium superconductivity in a noncentrosymmetric Rashba semiconductor journal July 2019

Figures / Tables (4)

FIG. 1(p. 2)figure FIG. 1
FIG. 2(p. 3)figure FIG. 2
FIG. 3(p. 3)figure FIG. 3
FIG. 4(p. 4)figure FIG. 4

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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
Magnetotransport
Superconductivity
Half-Heusler alloy
Superconductors
Magnetization measurements
Resistivity measurements
Specific heat measurements