Rare observation of spin-gapless semiconducting characteristics and related band topology of quaternary Heusler alloy CoFeMnSn

CoMnCrGa: a novel ferromagnetic material with high spin-polarization for room temperature spintronics

“…[14][15][16][17] As a result of this substitution, the crystal structure transforms to a lower symmetry space-group, where the 8c site in the Fm% 3m space group splits into 4c and 4d sites in the F% 43m space group. Recently, quaternary Heusler alloys attracted a lot of attention from the research community due to their HMF, [18][19][20][21][22] spingapless semiconductors, [23][24][25][26][27][28] spin-semimetal, 29 spin glass, 30 re-entrant spin glass 31 and bipolar magnetic semiconducting properties. 32 However, the structural disorder, which is quite inherent for Heusler alloys, is known to have a significant impact on the magnetic as well as the electronic structure.…”