Multiband superconductivity in Ta$_4$Pd$_3$Te$_{16}$ with anisotropic gap structure
| Autor: | Jiao, Wen-He, Liu, Yi, Li, Yu-Ke, Xu, Xiao-Feng, Bao, Jin-Ke, Feng, Chun-Mu, Li, Shi-Yan, Xu, Zhu-An, Cao, Guang-Han |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | J. Phys.: Condens. Matter 27, 325701 (2015) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/0953-8984/27/32/325701 |
| Popis: | We carried out the measurements of magnetoresistance, magnetic susceptibility and specific heat on crystals of the low-dimensional transition metal telluride Ta$_4$Pd$_3$Te$_{16}$. Our results indicate that Ta$_4$Pd$_3$Te$_{16}$ is an anisotropic type-II superconductor with the extracted Ginzburg-Landau parameter $\kappa_{\text{GL}}=$ 84. The upper critical field $H_{c2}$($T$) shows a linear dependence at low temperature and the anisotropy of $H_{c2}$($T$) is strongly $T$-dependent, both of which indicate a multiband scenario. A detailed analysis reveals that the electronic specific heat $C_{\text{el}}$($T$) can be consistently described by a two-gap ($s$+$d$ waves) model from the base temperature $T/T_c\sim$ 0.12 up to $T_c$. Our data suggests multiband superconductivity in Ta$_4$Pd$_3$Te$_{16}$ with anisotropic gap structure. Comment: 6 pages, 4 figures |
| Databáze: | arXiv |
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