论文标题
部分可观测时空混沌系统的无模型预测
Magnetic field-Temperature Phase Diagram of CeCoSi Constructed by Specific Heat, Magnetoresistivity, and Magnetization Measurements for a Single Crystal
论文作者
论文摘要
具有四方结构的基于CE的金属化合物Cecosi表现出连续的相变：其顺序参数在T_0 = 12 K处未识别的阶段参数未识别，而在T_N = 9.4 K处的抗铁磁磁性则表现出来。我们进行了特定的热量，磁性测量（MR），并在低音频率上进行了磁性磁场，并在磁性磁场上进行了磁性测量。两个b ||的场 - 温度相图[100]和[001]。纵向MR测量了B || [100]显示了在本样品中更新的T_0 = 13 K的符号变化，表明电子状态发生了明显的变化。此外，两个场方向的构造磁相图在每个有序状态下都有一个B诱导的区域。新发现的区域的存在将归因于通过应用B的对称性或域对齐的对称性的变化。
A Ce-based metallic compound CeCoSi with a tetragonal structure exhibits successive phase transitions: the one whose order parameter is unidentified at T_0 = 12 K and the antiferromagnetic one at T_N = 9.4 K. We performed specific heat, magnetoresistivity (MR), and magnetization measurements for a single crystal CeCoSi at low temperatures in magnetic fields B of up to 14 T and constructed detailed magnetic field--temperature phase diagrams for both B || [100] and [001]. The longitudinal MR measured for B || [100] shows a sign change from negative to positive across T_0 = 13 K updated in the present sample, indicating a clear change in an electronic state. In addition, the constructed magnetic phase diagrams for both the field directions have a B-induced region in each ordered state. The presence of the newly found regions would be attributed to a change in the symmetry of the order parameter or domain alignment by applying B.
