Chin. Phys. Lett.  2015, Vol. 32 Issue (11): 117401    DOI: 10.1088/0256-307X/32/11/117401
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Superconductivity in Pd-Intercalated Ternary Rare-Earth Polychalcogenide NdSeTe2
WANG Pei-Pei1, XUE Mian-Qi1, LONG Yu-Jia1,2, ZHAO Ling-Xiao1, CAI Yao1, YANG Huai-Xin1, LI Jian-Qi1,3, REN Zhi-An1,3, CHEN Gen-Fu1,3**
1Institute 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
3Collaborative Innovation Center of Quantum Matter, Beijing 100190
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WANG Pei-Pei, XUE Mian-Qi, LONG Yu-Jia et al  2015 Chin. Phys. Lett. 32 117401
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Abstract 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 Pd-intercalation. Bulk superconductivity first appears at x=0.06 with Tc nearly 2.5 K, coexisting with a CDW transition at 176 K. Further Pd-doping enhances Tc, until it reaches the maximum value 2.84 K at x=0.1, meanwhile the CDW transition vanishes. The upper critical field for the optimal doping sample Pd0.1NdSeTe2 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.
Received: 24 July 2015      Published: 01 December 2015
PACS:  74.25.-q (Properties of superconductors)  
  71.45.Lr (Charge-density-wave systems)  
  74.25.F- (Transport properties)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/32/11/117401       OR      https://cpl.iphy.ac.cn/Y2015/V32/I11/117401
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WANG Pei-Pei
XUE Mian-Qi
LONG Yu-Jia
ZHAO Ling-Xiao
CAI Yao
YANG Huai-Xin
LI Jian-Qi
REN Zhi-An
CHEN Gen-Fu
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