We studied the physical properties of isostructural CeRhX (X = Bi, Sb, As) series systematically. The experimental results show that CeRhBi is a metallic dense Kondo compound with large electronic specific heat coefficient y value (CIT ∼ 500 mJ/mol K2 at 2 K). Using the impurity Kondo model with J= 1/2 for the magnetic contribution to the specific heat, the Kondo temperature TK of CeRhBi is estimated to be about 9 K. LaRhBi, a reference compound for CeRhBi, is a superconductor with transition temperature of about 2.4 K. The ratio ΔC/γTC where ΔC is the specific heat jump at TC is calculated to be about 1.25, which is compared to the BCS value of 1.43.
- Kondo effect
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering