Growth and superconductivity of 2H - Ni_(0.02)TaSe_2 single crystals

Li L.J.; Sun Y.P.; Zhu X.D.Wang B.S.Zhu X.B.Yang Z.R.Song W.H.

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Growth and superconductivity of 2H - Ni_(0.02)TaSe_2 single crystals

机译：Growth and superconductivity of 2H - Ni_(0.02)TaSe_2 single crystals

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2H-Ni_(0.02)TaSe_2 single crystals were successfully grown via the iodine vapor transport technique. The typical dimension of the crystal is about 3×2×0.5 mm~3. Compared with the parent compound 2H-TaSe_2 with a superconducting transition temperature TC=0.14 K, the electronic transport, specific-heat and magnetization results indicate that the superconductivity of the Ni_(0.02)TaSe_2 single crystal is obviously enhanced (TC=2.79 K). In addition, it is found that the incommensurate charge-density-wave (ICDW) disappears while the commensurate charge-density-wave (CCDW) shifts to about 96.2 K with the intercalation of a little of Ni. It clearly indicates that there is a competition between superconductivity (SC) and charge-density-wave (CDW) order for 2H-TaSe _2 system and that between SC and ICDW is more drastic.

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来源
《Solid State Communications》 |2010年第46期|2248-2252|共5页
作者
Li L.J.; Sun Y.P.; Zhu X.D.Wang B.S.Zhu X.B.Yang Z.R.Song W.H.;
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作者单位

Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China;

High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China;

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正文语种英语
中图分类固体物理学;
关键词
A. Superconductivity; B. Iodine vapor transport; D. Charge-density-wave; E. Intercalation;

Growth and superconductivity of 2H - Ni_(0.02)TaSe_2 single crystals

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