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Magnetic Order and Instability in Newly Synthesized CoSeAs Marcasite



Yiyao Chen, G. Yumnam, A. Dahal, Jose Rodriguez Rivera, Guangyong Xu, T. Heitmann, D. K. Singh


Marcasite class of compounds provide 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 new marcasite CoSeAs in this letter. Experimental investigation of the new material using neutron scattering measurements reveal weak magnetic correlation of cobalt ions below Τ = 36.2 K. The modest isotropic exchange interaction between cobalt moments, inferred from random phase approximation analysis, hints of magnetically unstable environment. It is a desirable characteristic to induce unconventional superconductivity via chemical pressure application.
Physical Review Research


magnet order, marcasite, neutron scattering


Chen, Y. , Yumnam, G. , Dahal, A. , Rodriguez Rivera, J. , Xu, G. , Heitmann, T. and Singh, D. (2020), Magnetic Order and Instability in Newly Synthesized CoSeAs Marcasite, Physical Review Research, [online], (Accessed July 13, 2024)


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Created May 12, 2020, Updated October 12, 2021