Emergent Anomalous Hall Effect in the Eu-Based Compound with a Diamond Network: The Centrosymmetric Cubic Antiferromagnet EuTiAl
arXiv:2601.01788 · doi:10.7566/JPSJ.95.034707
Abstract
The centrosymmetric cubic compound EuTiAl, in which magnetic Eu ions form a diamond network, undergoes an antiferromagnetic transition at T = 3.3 K and exhibits metamagnetic transitions at H = 1.7 T and H = 2.8 T for H || [100] at 1.9 K. Between these fields, the magnetization shows a step-like behavior, defining an intermediate field-induced phase (Phase~II). We investigated the electronic transport in Phase~II and found that both the resistivity and Hall resistivity are markedly enhanced, while remaining nearly field independent within the phase. Phase~II appears for all field directions, although its transport response shows moderate directional dependence. These features differ from the strongly orientation-selective behavior often observed in skyrmion-lattice phases of several 4f-electron compounds, suggesting that Phase II may host a field-induced spin texture with a topological character distinct from that of a conventional skyrmion lattice.
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