论文标题
二维金属三角形晶格抗fiferromagnet cecd3p3
The two-dimensional metallic triangular lattice antiferromagnet CeCd3P3
论文作者
论文摘要
$ r $ cd $ _ {3} $ p $ _ {3} $（$ r $ = la和ce）的单晶已经通过磁化，电阻率，霍尔系数和特定热量进行了研究。 CECD $ _ {3} $ p $ _ {3} $的磁化测量结果证明了清晰的准2D磁性行为。电阻率和霍尔系数测量表明，$ r $ cd $ _ {3} $ p $ _ {3} $化合物是低载体密度金属系统，与早期对多晶材料的研究形成鲜明对比。 CECD $ _ {3} $ p $ _ {3} $的特定热和电阻率测量显示高温（结构）相变为$ t_ {s} = 127 $ 〜K，抗fiferromagnetic订购在$ t_ {n} = 0.41 $ 〜k。将磁场应用于易于平面（$ h {\ parallel} ab $）时，磁性订购温度在$ h \ sim 15 $ 〜KOE时增加到0.43〜K，表明磁性挫败感的部分提升。由于沮丧的旋转，大型电子特异性热量在$ t_ {n} $以上的温度异常范围内持续。对电阻率中传统金属行为的观察表明，CECD $ _ {3} $ p $ _ {3} $中的$ f $ -Electrons与传导电子的杂交无关紧要。因此，CECD $ _ {3} $ p $ _ {3} $可能是模型系统，用于探索低载体密度CE CE三角形晶格上磁性挫败感和rkky物理之间的复杂相互作用。
Single crystals of $R$Cd$_{3}$P$_{3}$ ($R$ = La and Ce) have been investigated by magnetization, electrical resistivity, Hall coefficient, and specific heat. Magnetization measurements of CeCd$_{3}$P$_{3}$ demonstrate clear quasi-2D magnetic behavior. Electrical resistivity and Hall coefficient measurements suggest that $R$Cd$_{3}$P$_{3}$ compounds are low carrier density metallic systems, in strong contrast to an earlier study of polycrystalline material. Specific heat and electrical resistivity measurements of CeCd$_{3}$P$_{3}$ reveal a high temperature (structural) phase transition at $T_{s} = 127$~K and antiferromagnetic ordering below $T_{N} = 0.41$~K. Upon applying magnetic field in the easy-plane ($H {\parallel} ab$) the magnetic ordering temperature increases to 0.43~K at $H \sim 15$~kOe, demonstrating partial lifting of the magnetic frustration. The large electronic specific heat persists in an unusually wide range of temperature above $T_{N}$, due to the frustrated spins. The observation of conventional metallic behavior in the electrical resistivity suggests that the $f$-electrons in CeCd$_{3}$P$_{3}$ undergo negligible hybridization with the conduction electrons. Thus, CeCd$_{3}$P$_{3}$ may be a model system for exploring the complex interplay between magnetic frustration and RKKY physics on a low carrier density Ce triangular lattice.
