Data di Pubblicazione:
2023
Citazione:
Discovery of a Magnetic Dirac System with a Large Intrinsic Nonlinear Hall Effect / F. Mazzola, B. Ghosh, J. Fujii, G. Acharya, D. Mondal, G. Rossi, A. Bansil, D. Farias, J. Hu, A. Agarwal, A. Politano, I. Vobornik. - In: NANO LETTERS. - ISSN 1530-6984. - 23:3(2023 Jan), pp. 902-907. [10.1021/acs.nanolett.2c04194]
Abstract:
Magnetic materials exhibiting topological Dirac fermions are attracting significant attention for their promising technological potential in spintronics. In these systems, the combined effect of the spin-orbit coupling and magnetic order enables the realization of novel topological phases with exotic transport properties, including the anomalous Hall effect and magneto-chiral phenomena. Herein, we report experimental signature of topological Dirac antiferromagnetism in TaCoTe2 via angle-resolved photoelectron spectroscopy and first-principles density functional theory calculations. In particular, we find the existence of spin-orbit coupling-induced gaps at the Fermi level, consistent with the manifestation of a large intrinsic nonlinear Hall conductivity. Remarkably, we find that the latter is extremely sensitive to the orientation of the Néel vector, suggesting TaCoTe2 as a suitable candidate for the realization of non-volatile spintronic devices with an unprecedented level of intrinsic tunability.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
ARPES; Dirac antiferromagnet; nonlinear Hall effect; spin-orbit coupling; topology
Elenco autori:
F. Mazzola, B. Ghosh, J. Fujii, G. Acharya, D. Mondal, G. Rossi, A. Bansil, D. Farias, J. Hu, A. Agarwal, A. Politano, I. Vobornik
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