Avoided Antiferromagnetic Order and Quantum Critical Point in CeCoIn 5
The specific heat and resistivity of heavy fermion CeCoIn5 within the superconducting critical field of 5-9 T, in the field direction of , and at temperatures going down to 50 mK were measured. At 5 T critical field condition to the lowest temperatures, the results show a non-Fermi liquid (NFL) behavior. At above 8 T critical field conditions, the results exhibited a crossover behavior from that of a Fermi liquid (FL) to a non-Fermi liquid (NFL). The analysis study suggested that the NFL behavior was due to the antiferromagnetic (AFM) ordering in the Ce-based compound with the quantum critical point in the vicinity of superconducting critical field.
Publication Source (Journal or Book title)
Physical Review Letters
Blanchi, A., Movshovich, R., Vekhter, I., Pagliuso, P., & Sarrao, J. (2003). Avoided Antiferromagnetic Order and Quantum Critical Point in CeCoIn 5. Physical Review Letters, 91 (25), 2570011-2570014. Retrieved from https://digitalcommons.lsu.edu/physics_astronomy_pubs/5462