Topological $R$PdBi half-Heusler semimetals: a new family of non-centrosymmetric magnetic superconductors

Abstract

We report superconductivity and magnetism in a new family of topological semimetals, the ternary half Heusler compounds $R$PdBi ($R$ : rare earth). In this series, tuning of the rare earth $f$-electron component allows for simultaneous control of both lattice density via lanthanide contraction, as well as the strength of magnetic interaction via de Gennes scaling, allowing for a unique tuning of both the normal state band inversion strength, superconducting pairing and magnetically ordered ground states. Antiferromagnetism with ordering vector (0.5,0.5,0.5) occurs below a Neéel temperature that scales with de Gennes factor $dG$, while a superconducting transition is simultaneously linearly suppressed. With superconductivity appearing in a system with non-centrosymmetric crystallographic symmetry, the possibility of spin-triplet Cooper pairing with non-trivial topology analogous to that predicted for the normal state electronic structure provides a unique and rich opportunity to realize both predicted and new exotic excitations in topological materials.

arXiv comment14 pages, 8 figures

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• Electronic Transport and quantum oscillation of Topological Semimetals
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• Observation of Unusual Topological Surface States in Half-Heusler Compounds LnPtBi (Ln=Lu, Y)
• Superconductivity in three-dimensional spin-orbit coupled semimetals
• Topological superconductivity of spin-3/2 carriers in a three-dimensional doped Luttinger semimetal
• Pairing states of spin-3/2 fermions: Symmetry-enforced topological gap functions
• Antiferromagnetism and superconductivity in the half-Heusler semimetal HoPdBi
• Unconventional superconductivity in YPtBi and related topological semimetals
• Unconventional Superconductivity in Luttinger Semimetals: Theory of Complex Tensor Order and the Emergence of the Uniaxial Nematic State
• Superconductivity in half-Heusler compound TbPdBi
• Superconductivity in topologically nontrivial material Au2Pb
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• Model Hamiltonian and Time Reversal Breaking Topological Phases of Anti-ferromagnetic Half-Heusler Materials
• Magnetic and superconducting phase diagram of the half-Heusler topological semimetal HoPdBi
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• Pairing from dynamically screened Coulomb repulsion in bismuth
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• Perspective: strain and strain gradient engineering in membranes of quantum materials
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• Singlet-Quintet Mixing in Spin-Orbit Coupled Superconductors with j=3/2 Fermions
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• Observation of Dirac surface states in the noncentrosymmetric superconductor BiPd
• Tuning the Parity Mixing of Singlet-Septet Pairing in a Half-Heusler Superconductor
• Efficient spin current source using a half-Heusler alloy topological semimetal with Back-End-of-Line compatibility
• Perspective: Heusler interfaces -- opportunities beyond spintronics?
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• Band structure tuning of Heusler compounds revisited: Spin- and momentum-resolved electronic structure analysis of compounds with different band filling
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• Band structure and transport studies of half Heusler compound DyPdBi: An efficient thermoelectric material
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• Interacting spin-3/2 fermions in a Luttinger semimetal: Competing phases and their selection in the global phase diagram
• Topological Superconducting Vortex From Trivial Electronic Bands
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• Implicit renormalization approach to the problem of Cooper instability
• Magnetotransport signatures of chiral magnetic anomaly in the half-Heusler phase ScPtBi
• Unconventional superconductivity and Surface pairing symmetry in Half-Heusler Compounds
• Tuning the topological character of half-Heusler systems: A comparative study on Y$T$Bi ($T$ = Pd, Pt)
• Topological Larkin-Ovchinnikov phase and Majorana zero mode chain in bilayer superconducting topological insulator films
• Campbell penetration depth in low carrier density superconductor YPtBi
• Thermal plasmon resonantly enhances electron scattering in Dirac/Weyl semimetals
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• Kohn-Luttinger Correction to Tc in a Phonon Superconductor
• The effect of interorbital scattering on superconductivity in doped Dirac materials
• Multipolar superconductivity in Luttinger semimetals
• Using Disorder to Identify Bogoliubov Fermi-Surface States
• Role of chemical disorder in tuning the Weyl points in vanadium doped Co${}_2$TiSn
• Antiferromagnetic spin fluctuations and unconventional superconductivity in topological superconductor candidate YPtBi revealed by ${}^{195}$Pt-NMR
• Nodal S-wave Superconductivity in Antiferromagnetic Semimetals
• Ferromagnetic Cr4PtGa17: A Novel Half-Heusler-Type Compound with a Breathing Pyrochlore Lattice
• Intrinsic finite-energy Cooper pairing in $j=3/2$ superconductors
• Anisotropic exchange and non-collinear antiferromagnets on a noncentrosymmetric fcc structure as in the half-Heuslers
• Multiplicative topological semimetals
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• Long-lived non-equilibrium superconductivity in a non-centrosymmetric Rashba semiconductor
• Insulating Half-Heusler TmPdSb with Unusual Band Order and Metallic Surface States
• Unusual upper critical fields of the topological nodal-line semimetal candidate Sn${}_x$NbSe${}_{2-\delta }$
• Al${}_2$MnCu: A magnetically ordered member of the Heusler alloy family despite having a valence electron count of 24
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• Structural and transport properties of 4f electron doped Y1-x(Dy)xPdBi topological semi-metallic thin films
• The Effect of Repulsion on Superconductivity at Low Density
• Materials Screening for the Discovery of New Half-Heuslers: Machine Learning versus Ab Initio Methods
• Quantum Oscillations and Superconductivity in YPtBi Under Pressure
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