Superconductivity in Pd-Intercalated Ternary Rare-Earth Polychalcogenide NdSeTe2

We synthesize a set of Pd-doped polycrystalline samples PdxNdSeTe2 and measure their physical properties. Compared with pure NdSeTe2, the charge density wave （CDW） order is continuously suppressed with the Pdintercalation. Bulk superconductivity first appears at x = 0.06 with Tc nearly 2.5I〈, coexis...

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Published in中国物理快报：英文版 no. 11; pp. 140 - 143
Main Author 壬培培 薛面起 龙雨佳 赵凌霄 蔡瑶 杨槐馨 李建奇 任治安 陈根富
Format Journal Article
LanguageEnglish
Published 01.11.2015
Subjects
CDW
三元
多晶样品
物理性质
电荷密度波
稀土
超导电性
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Summary:We synthesize a set of Pd-doped polycrystalline samples PdxNdSeTe2 and measure their physical properties. Compared with pure NdSeTe2, the charge density wave （CDW） order is continuously suppressed with the Pdintercalation. Bulk superconductivity first appears at x = 0.06 with Tc nearly 2.5I〈, coexisting with a CDW transition at 176K. Further Pd-doping enhances Tc, until it reaches the maximum value 2.84K at x=0.1, meanwhile the CDW transition vanishes. The upper critical field for the optimal doping sample Pdo.lNdSeTe2 is determined from the R-H measurement, which is estimated to be 0.6 T. These results provide another kind of ideal compound for studying the interplay between CDW and superconductivity systematically.
Bibliography:We synthesize a set of Pd-doped polycrystalline samples PdxNdSeTe2 and measure their physical properties. Compared with pure NdSeTe2, the charge density wave （CDW） order is continuously suppressed with the Pdintercalation. Bulk superconductivity first appears at x = 0.06 with Tc nearly 2.5I〈, coexisting with a CDW transition at 176K. Further Pd-doping enhances Tc, until it reaches the maximum value 2.84K at x=0.1, meanwhile the CDW transition vanishes. The upper critical field for the optimal doping sample Pdo.lNdSeTe2 is determined from the R-H measurement, which is estimated to be 0.6 T. These results provide another kind of ideal compound for studying the interplay between CDW and superconductivity systematically.
11-1959/O4
WANG Pei-Pei, XUE Mian-Qi, LONG Yu-Jia, ZHAO CAI Yao, YANG Huai-Xin, LI Jian-Qi, REN Zhi-An, CHEN Gen-Fu（1 lnstitute of Physics and Beijing National Laboratory for Condensed Matter Physics Chinese Academy of Sciences, Beijing 100190 2Department of Physics, Renmin University of China, Beijing 100872 ;Collaborative Innovation Center of Quantum Matter, Beijing 100190）
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/32/11/117401