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|Title:||Controlled growth of 3R phase tantalum diselenide and its enhanced superconductivity||Authors:||Deng, Ya
Pennycook, Stephen J.
Wang, Renshaw Xiao
|Keywords:||Engineering::Materials||Issue Date:||2020||Source:||Deng, Y., Lai, Y., Zhao, X., Wang, X., Zhu, C., Huang, K., Zhu, C., Zhou, J., Zeng, Q., Duan, R., Fu, Q., Kang, L., Liu, Y., Pennycook, S. J., Wang, R. X. & Liu, Z. (2020). Controlled growth of 3R phase tantalum diselenide and its enhanced superconductivity. Journal of the American Chemical Society, 142(6), 2948-2955. https://dx.doi.org/10.1021/jacs.9b11673||Journal:||Journal of the American Chemical Society||Abstract:||Transition metal dichalcogenides (TMDs) have become a playground for exploring rich physical phenomena like superconductivity and charge-density-waves (CDW). Here, we report the synthesis of the atom-thin TaSe2 with a rare 3R phase and enhanced superconductivity. The 3R phase is achieved by an ambient pressure chemical vapor deposition (CVD) strategy and confirmed by the high-resolution aberration-corrected STEM. Low-temperature transport data reveal an enhanced superconducting transition temperature (Tc) of 1.6 K in the 3R-TaSe2, which undoubtedly breaks the traditional perception of TaSe2 crystal as a material with Tc close to 0 K. This work demonstrates the strength of ambient pressure CVD in the exploration of crystal polymorphism, highlights a decisive role of layer stacking order in the superconducting transition, and provides fresh insights on manipulating crystal structures to gain access to enhanced Tc.||URI:||https://hdl.handle.net/10356/151387||ISSN:||1520-5126||DOI:||10.1021/jacs.9b11673||Rights:||This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of the American Chemical Society, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/jacs.9b11673||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||SPMS Journal Articles|
Updated on Oct 15, 2021
Updated on Oct 15, 2021
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