Magnetic order and instability in newly synthesized CoSeAs marcasite

oleh: Yiyao Chen, G. Yumnam, A. Dahal, J. A. Rodriguez-Rivera, Guangyong Xu, T. W. Heitmann, D. K. Singh

Format: Article
Diterbitkan: American Physical Society 2020-05-01

Deskripsi

Marcasite class of compounds provide a facile platform to explore novel phenomena of fundamental and technological importance, such as unconventional superconductivity or high-performance electrocatalyst. We report the synthesis and experimental investigation of a marcasite CoSeAs in this paper. Experimental investigation of this material using neutron scattering measurements reveals weak magnetic correlation of cobalt ions below T=36.2 K. The modest isotropic exchange interaction between cobalt moments, inferred from random phase approximation analysis, hints of a magnetically unstable environment. It is a desirable characteristic to induce unconventional superconductivity via chemical pressure application.