Superconducting Property in CePt3Si under Pressure
Superconducting Property in CePt3Si under Pressure
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DOI：
10.1143/jpsj.73.1657
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发表时间：
2004-07
影响因子：
1.7
通讯作者：
Takashi Yasuda;H. Shishido;T. Ueda;Shin Hashimoto;R. Settai;T. Takeuchi;Tatsuma D. Matsuda;Y. Haga;Y. Ōnuki
中科院分区：
文献类型：
--
作者：
Takashi Yasuda;H. Shishido;T. Ueda;Shin Hashimoto;R. Settai;T. Takeuchi;Tatsuma D. Matsuda;Y. Haga;Y. Ōnuki
通过测量四方晶体结构中第一个无反转对称性的反铁磁性重费米子超导体CeP_3Si在磁场和压力下的电阻率，研究了它的超导性质。上临界场Hc2(0)近似各向同性：对于H∥[10 0]，Hc2(0)=2.7T；对于H∥[0 0 1]，Hc2(0)=3.2T。Neel温度TN=2.3K和零阻超导转变温度Tsc≃0.6 5K随压力的升高而显著降低，表明超导电性与反铁磁态有关。
We have studied the superconducting property by measuring the electrical resistivity under the magnetic field and pressure for CePt 3 Si, which is the first antiferromagnetic heavy fermion superconductor without inversion symmetry in its tetragonal crystal structure. The upper critical field H c2 (0) is found to be approximately isotropic: H c2 (0) = 2.7 T for H ∥[100] and 3.2 T for H ∥[001]. The Neel temperature T N = 2.3 K and the zero resistivity superconducting transition temperature T sc ≃0.65 K decrease markedly with increasing pressure, suggesting that the present superconductivity is correlated to the antiferromagnetic state.