Crystal Structure Analysis and Magneto‐Transport Investigation of Co 1− x Fe x Si (with x = 0% to x = 20%)

Cobalt monosilicide, CoSi, belongs to the new class of materials, featuring Weyl nodes in bulk band structure, located very close Fermi energy. By shifting chemical potential into these using Fe-doping, quantum effects like chiral anomaly and weak anti localization have been evidenced. However, behavior with respect doping concentration is largely unexplored. Crystal structure electrical transport properties single crystalline CoSi micro-ribbons different Fe-doping are studied identify characteristic temperatures electronic correlation effects. For crystal analysis, transmission electron microscopy powder X-ray diffraction analysis a refined structural model performed based on Le Bail fitting analyze lattice parameter. Hereby, change parameter Co1−xFexSi shown increasing Fe content. In occurrence effect Fe-doped presented. It that can be tailored by CoSi.