Superconducting diode effect in the Weyl semimetal T d -MoTe 2 that has a surface modulated by Al nanoparticles
Source abstract
Abstract
Breaking both inversion and time reversal symmetry could lead to nonreciprocal current transport in a superconductor, where current is dissipationless in one direction and dissipative in the opposite direction, which is called the superconducting diode effect (SDE). We studied SDE in the type-II Weyl semimetal Td-MoTe2 that is covered with Al nanoparticles. Asymmetric V-I characteristics have been measured under a magnetic field. The superconducting diode efficiency reaches as high as 30%. Besides SDE under the out-of-plane field, nonreciprocal supercurrent transport under the in-plane field has been observed. Intriguingly, the maximum SDE occurs in the in-plane field parallel to the current direction, which contradicts present theories. Our work provides further understanding of the origins of the SDE.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Topological Materials and Phenomena · 2D Materials and Applications · Advanced Thermoelectric Materials and Devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
International Quantum Academy, Shenzhen 518048, China
Guangdong Provincial Key Laboratory of Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
Department of Materials Science, School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi, 330031, China
Department of Physics, College of Science, Southern University of Science and Technology, Shenzhen 518055, China
Funding
Guangdong Science and Technology Department · National Natural Science Foundation of China
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