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Chin. Phys. B, 2017, Vol. 26(5): 057401    DOI: 10.1088/1674-1056/26/5/057401
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Superconductivity in self-flux-synthesized single crystalline R2Pt3Ge5(R = La, Ce, Pr)

Q Sheng(盛琪)1, J Zhang(张建)1, K Huang(黄百畅)1, Z Ding(丁兆峰)1, X Peng(彭小冉)1, C Tan(谭程)1, L Shu(殳蕾)1,2
1 State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China;
2 Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
Abstract  

In order to study the basic superconductivity properties of Pr2Pt3Ge5, we synthesized the single crystalline samples by the Pt-Ge self-flux method. R2Pt3Ge5 (R = La, Ce) were also grown for a systematic study. Zero-resistivity was observed in both the La- and Pr-based samples below the reported superconducting transition temperatures. However, magnetic susceptibility measurements showed low superconductivity volume fractions in both La2Pt3Ge5 and Pr2Pt3Ge5 (less than 2%). Ce2Pt3Ge5 did not show any signature of superconductivity. From the specific heat measurements, we did not observe a superconducting transition peak in Pr2Pt3Ge5, suggesting that it is not a bulk superconductor. The magnetic susceptibility and heat capacity measurements revealed two antiferromagnetic (AFM) orders in Pr2Pt3Ge5 at TN1 = 4.2 K and TN2=3.5 K, as well as a single AFM transition at TN = 3.8 K in Ce2Pt3Ge5.

Keywords:  superconductivity      antiferromagnetism      heavy fermion behavior  
Received:  28 November 2016      Revised:  16 February 2017      Accepted manuscript online: 
PACS:  74.25.Ha (Magnetic properties including vortex structures and related phenomena)  
  75.50.Ee (Antiferromagnetics)  
Fund: 

Project supported by the National Natural Science Foundation of China (Grant No. 11204041) and STCSM of China (Grant No. 15XD1500200).

Corresponding Authors:  L Shu     E-mail:  leishu@fudan.edu.cn

Cite this article: 

Q Sheng(盛琪), J Zhang(张建), K Huang(黄百畅), Z Ding(丁兆峰), X Peng(彭小冉), C Tan(谭程), L Shu(殳蕾) Superconductivity in self-flux-synthesized single crystalline R2Pt3Ge5(R = La, Ce, Pr) 2017 Chin. Phys. B 26 057401

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