Giant magnetoresistance and topological Hall effect in the EuGa<sub>4</sub> antiferromagnet
Giant magnetoresistance and topological Hall effect in the EuGa<sub>4</sub> antiferromagnet
We report on systematic temperature- and magnetic field-dependent studies of the EuGa4binary compound, which crystallizes in a centrosymmetric tetragonal BaAl4-type structure with space groupI4/mmm. The electronic properties of EuGa4single crystals, with an antiferromagnetic (AFM) transition atTNā¼ 16.4 K, were characterized via electrical resistivity and magnetization measurements. A giant nonsaturating magnetoresistance ā¦