Discovery of the High‐Entropy Carbide Ceramic Topological Superconductor Candidate (Ti0.2Zr0.2Nb0.2Hf0.2Ta0.2)C

Lingli Zeng; Zheng Wang; Jing Song; Gaoting Lin; Ruixin Guo; Si‐Chun Luo; Shu Guo; Peifeng Yu; Chao Zhang; Wanli Guo; Jie Ma; Yusheng Hou; Huixia Luo

doi:10.1002/adfm.202301929

journal article May 31, 2023

Discovery of the High‐Entropy Carbide Ceramic Topological Superconductor Candidate (Ti0.2Zr0.2Nb0.2Hf0.2Ta0.2)C

Lingli Zeng Zheng Wang

Jing Song

Gaoting Lin Ruixin Guo Si‐Chun Luo Shu Guo

Peifeng Yu Chao Zhang

Wanli Guo Jie Ma

Yusheng Hou

Huixia Luo

Advanced Functional Materials Vol. 33 No. 40 · Wiley

View at Publisher Save 10.1002/adfm.202301929

Abstract

AbstractHigh‐entropy ceramics (HECs) are solid solutions of inorganic compounds with one or more Wyckoff sites shared by equal or near‐equal atomic ratios of multi‐principal elements. Material design and property tailoring possibilities emerge from this new class of materials. Herein, the discovery of superconductivity 2.35 K and topological properties in the (Ti0.2Zr0.2Nb0.2Hf0.2Ta0.2)C high‐entropy carbide ceramic (HECC) is reported, which is not observed before in any of the investigated HECC. Density functional theory calculations show that six type‐II Dirac points exist in (Ti0.2Zr0.2Nb0.2Hf0.2Ta0.2)C, which mainly contributed from the t2g orbitals of transition metals and the p orbitals of C. Due to the stability of the structure, robust superconductivity (SC) under pressure in this HEC superconductor is also observed. This study expands the physical properties of HECs, which may become a new material platform for SC research, especially for studying the coupling between SC and topological physics.

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Cited By

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Metrics

34

Citations

57

References

Details

Published: May 31, 2023
Vol/Issue: 33(40)
License: View

Authors

L

Lingli Zeng

School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and Technologies Key Lab of Polymer Composite & Functional Materials Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices Sun Yat‐Sen University Guangzhou 510275 China

Z

Zheng Wang

Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices Center for Neutron Science and Technology School of Physics Sun Yat‐Sen University Guangzhou 510275 China

J

Jing Song

Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China

G

Gaoting Lin

Key Laboratory of Artificial Structures and Quantum Control School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China

R

Ruixin Guo

Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen 518055 China; International Quantum Academy Shenzhen 518048 China

S

Si‐Chun Luo

School of Electromechanical Engineering Guangdong University of Technology Guangzhou 510006 China

S

Shu Guo

Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen 518055 China; International Quantum Academy Shenzhen 518048 China

P

Peifeng Yu

School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and Technologies Key Lab of Polymer Composite & Functional Materials Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices Sun Yat‐Sen University Guangzhou 510275 China

C

Chao Zhang

School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and Technologies Key Lab of Polymer Composite & Functional Materials Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices Sun Yat‐Sen University Guangzhou 510275 China

W

Wanli Guo

School of Electromechanical Engineering Guangdong University of Technology Guangzhou 510006 China

J

Jie Ma

Key Laboratory of Artificial Structures and Quantum Control School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China; Wuhan National High Magnetic Field Center Huazhong University of Science and Technology Wuhan 430074 China; Collaborative Innovation Center of Advanced Microstructures Nanjing University Hankou Road 22 Nanjing 210093 China

Y

Yusheng Hou

Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices Center for Neutron Science and Technology School of Physics Sun Yat‐Sen University Guangzhou 510275 China

H

Huixia Luo

School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and Technologies Key Lab of Polymer Composite & Functional Materials Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices Sun Yat‐Sen University Guangzhou 510275 China

Funding

National Natural Science Foundation of China Award: 12274471

Cite This Article

Lingli Zeng, Zheng Wang, Jing Song, et al. (2023). Discovery of the High‐Entropy Carbide Ceramic Topological Superconductor Candidate (Ti0.2Zr0.2Nb0.2Hf0.2Ta0.2)C. Advanced Functional Materials, 33(40). https://doi.org/10.1002/adfm.202301929

Discovery of the High‐Entropy Carbide Ceramic Topological Superconductor Candidate (Ti0.2Zr0.2Nb0.2Hf0.2Ta0.2)C

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