Chin. Phys. Lett.  2019, Vol. 36 Issue (5): 057501    DOI: 10.1088/0256-307X/36/5/057501
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Low-Temperature Properties of CePt$_{3}$P Tuned by Magnetic Field
Jian Chen1**, Bai-Jiang Lv2, Shi-Yi Zheng2, Yu-Ke Li3
1Zhejiang University of Water Resources and Electric Power, Hangzhou 310018
2Zhejiang Provincial Key Laboratory of Quantum Technology and Device, Department of Physics, Zhejiang University, Hangzhou 310027
3Department of Physics, Hangzhou Normal University, Hangzhou 310036
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Jian Chen, Bai-Jiang Lv, Shi-Yi Zheng et al  2019 Chin. Phys. Lett. 36 057501
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Abstract We present low-temperature magnetization, magnetoresistance and specific heat measurements on the Kondo lattice compound CePt$_{3}$P under applied magnetic fields up to 9.0 T. At zero field, CePt$_{3}$P exhibits a moderately enhanced Sommerfeld coefficient of electronic specific heat $\gamma_{\rm Ce}=86$ mJ/mol$\cdot$K$^{2}$ as well as two successive magnetic transitions of Ce 4$f$ moments: an antiferromagnetic ordering at $T_{\rm N1}=3.0$ K and a spin reorientation at $T_{\rm N2}=1.9$ K. The value of $T_{\rm N1}$ shifts to lower temperature as magnetic field increases, and it is ultimately suppressed around $B_{\rm c}\sim 3.0$ T at 1.5 K. No evidence of non-Fermi liquid behavior is observed around $B_{\rm c}$ down to the lowest temperature measured. Moreover, $\gamma$ decreases monotonously with increasing the magnetic field. On the other hand, the electrical resistivity shows an anomalous temperature dependence $\rho\propto T^{n}$ with the exponent $n$ decreasing monotonously from $\sim$2.6 around $B_{\rm c}$ down to $\sim$1.7 for $B=9.0$ T. The $T$–$B$ phase diagram constructed from the present experimental results of CePt$_{3}$P does not match the quantum criticality scenario of heavy fermion systems.
Received: 19 December 2018      Published: 17 April 2019
PACS:  75.20.Hr (Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions)  
  72.15.Qm (Scattering mechanisms and Kondo effect)  
  74.62.-c (Transition temperature variations, phase diagrams)  
Fund: Supported by the Zhejiang Provincial Natural Science Foundation of China under Grant No LQ19A040006, and the Scientific Research Fund of Zhejiang Provincial Education Department under Grant No Y201840160.
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https://cpl.iphy.ac.cn/10.1088/0256-307X/36/5/057501       OR      https://cpl.iphy.ac.cn/Y2019/V36/I5/057501
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Jian Chen
Bai-Jiang Lv
Shi-Yi Zheng
Yu-Ke Li
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