Thickness-dependent superconductivity in layered 2M-WS<sub>2</sub>
ORAL
Abstract
Topological superconductivity has become an active research field in recent years because it not only opens up opportunities in quantum physics, but also paves a way to revolutionize the current computing technology. Since the discovery of superconductivity in a binary transition metal dichalcogenide (TMD), 2M-WS2, in 2019, study of the possible topological properties and the corresponding pairing symmetry has attracted extensive attention. Here, we will first introduce the preparation of high quality 2M-WS2 nanolayers and then discuss the thickness dependence of the superconductivity in 2M-WS2. We find that the superconductivity in 2M-WS2 can persistent down to few layers. The corresponding transition temperature decreases from ~ 8.7 K to 6.9 K as the thickness varies from 40 nm to 3 nm. In the end, the pairing symmetry will also be discussed. Our discovery may provide evidence of the existence of topological properties in 2M-WS2 at the atomic scale.
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Presenters
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John I Ackerman
University of Wyoming, University of Wyoming, Department of Chemical Engineering
Authors
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John I Ackerman
University of Wyoming, University of Wyoming, Department of Chemical Engineering
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John I Ackerman
University of Wyoming, University of Wyoming, Department of Chemical Engineering
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Joseph McBride
University of Wyoming
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Zhuangen Fu
University of Wyoming
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Wenyong Wang
University of Wyoming
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John I Ackerman
University of Wyoming, University of Wyoming, Department of Chemical Engineering
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Brian Leonard
University of Wyoming
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Jinke Tang
University of Wyoming, University of Wyoming, Department of Physics and Astronomy
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TeYu Chien
University of Wyoming
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Jifa Tian
University of Wyoming