Topological RPdBi half-Heusler semimetals: A new family of noncentrosymmetric magnetic superconductors

Nakajima, Yasuyuki; Hu, Rongwei; Kirshenbaum, Kevin; Hughes, Alex; Syers, Paul; Wang, Xiangfeng; Wang, Kefeng; Wang, Renxiong; Saha, Shanta R.; Pratt, Daniel; Lynn, Jeffrey W.; Paglione, Johnpierre

doi:10.1126/sciadv.1500242

Topological RPdBi half-Heusler semimetals: A new family of noncentrosymmetric magnetic superconductors

Journal Article · Fri Jun 05 00:00:00 EDT 2015 · Science Advances

DOI:https://doi.org/10.1126/sciadv.1500242· OSTI ID:1625945

Nakajima, Yasuyuki ^[1]; Hu, Rongwei ^[2]; Kirshenbaum, Kevin ^[2]; Hughes, Alex ^[2]; Syers, Paul ^[2]; Wang, Xiangfeng ^[2]; Wang, Kefeng ^[2]; Wang, Renxiong ^[2]; Saha, Shanta R. ^[2]; Pratt, Daniel ^[3]; Lynn, Jeffrey W. ^[3]; Paglione, Johnpierre ^[2]

Univ. of Maryland, College Park, MD (United States). Center for Nanophysics and Advanced Materials; DOE/OSTI
Univ. of Maryland, College Park, MD (United States). Center for Nanophysics and Advanced Materials
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)

We report superconductivity and magnetism in a new family of topological semimetals, the ternary half-Heusler compoundRPdBi (R: rare earth). In this series, tuning of the rare earthf-electron component allows for simultaneous control of both lattice density via lanthanide contraction and the strength of magnetic interaction via de Gennes scaling, allowing for a unique tuning of the normal-state band inversion strength, superconducting pairing, and magnetically ordered ground states. Antiferromagnetism with ordering vector (½,½,½) occurs below a Néel temperature that scales with de Gennes factor dG, whereas a superconducting transition is simultaneously supressed with increasingdG. With superconductivity appearing in a system with noncentrosymmetric crystallographic symmetry, the possibility of spin-triplet Cooper pairing with nontrivial 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.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Maryland, College Park, MD (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0010605

OSTI ID:: 1625945

Journal Information:: Science Advances, Journal Name: Science Advances Journal Issue: 5 Vol. 1; ISSN 2375-2548

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

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