Antiferromagnetic Kondo lattice compound CePt3P.
A new ternary platinum phosphide CePt3P was synthesized and characterized by means of magnetic, thermodynamic and transport measurements. The compound crystallizes in an antiperovskite tetragonal structure similar to that in the canonical family of platinum-based superconductors APt3P (A = Sr, Ca, La) and closely related to the noncentrosymmetric heavy fermion superconductor CePt3Si. In contrast to all the superconducting counterparts, however, no superconductivity is observed in CePt3P down to 0.5 K. Instead, CePt3P displays a coexistence of antiferromagnetic ordering, Kondo effect and crystalline electric field effect. A field-induced spin-flop transition is observed below the magnetic ordering temperature TN1of 3.0 K while the Kondo temperature is of similar magnitude as TN1. The obtained Sommerfeld coefficient of electronic specific heat is γCe= 86 mJ/mol·K2indicating that CePt3P is a moderately correlated antiferromagnetic Kondo lattice compound.
Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China.|Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.
Jian
J
Chen
Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China.
Zhen
Z
Wang
Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China.
Shiyi
S
Zheng
Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China.
Chunmu
C
Feng
Department of Physics, Hangzhou Normal University, Hangzhou 310036, China.
Jianhui
J
Dai
Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China.|Zhejiang California International NanoSystems Institute, Zhejiang University, Hangzhou 310058, China.|Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China.
Zhu'an
Z
Xu