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- W4362635893 abstract "Previous investigations of 4Hb-TaS2−2xSe2x have primarily focused on the interplay between superconductivity and charge density wave (CDW). However, the superconductivity itself, although enhanced by isovalent Se substitution, has not been adequately explored. Here, we conducted comprehensive electrical and magneto-transport measurements on a series of 4Hb-TaS2−2xSe2x single crystals down to 0.1 K. Our examination of the temperature-dependent resistivity demonstrates that decreased Debye temperatures (ΘD) and higher electron–phonon coupling constants (λe–p) at optimal Se doping content result in an increased superconducting transition temperature (Tc). Additionally, we discovered that Se incorporation reduces the degree of the superconductivity anisotropy in this layered structure. Our analysis of the vortex liquid phase region suggests that the vortex dynamics of the optimally doped sample can be interpreted by thermally-driven flux motion. The transition widths in the resistivity cannot be scaled according to the canonical 2D Tinkham model but instead follows a linear trend with the variation of the external magnetic field. These findings emphasize the importance of interlayer interaction in this spatially segregated superconducting-Mott-insulating system." @default.
- W4362635893 created "2023-04-07" @default.
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- W4362635893 date "2023-05-15" @default.
- W4362635893 modified "2023-10-18" @default.
- W4362635893 title "A Revisit of Superconductivity in 4<i>H</i><sub>b</sub>-TaS<sub>2−2</sub><i><sub>x</sub></i>Se<sub>2</sub><i><sub>x</sub></i> Single Crystals" @default.
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- W4362635893 doi "https://doi.org/10.7566/jpsj.92.054702" @default.
- W4362635893 hasPublicationYear "2023" @default.
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