The chiral Anomalous Hall effect in re-entrant AuFe alloys

Abstract

The Hall effect has been studied in a series of AuFe samples in the re-entrant concentration range, as well as in part of the spin glass range. An anomalous Hall contribution linked to the tilting of the local spins can be identified, confirming theoretical predictions of a novel topological Hall term induced when chirality is present. This effect can be understood in terms of Aharonov-Bohm-like intrinsic current loops arising from successive scatterings by canted local spins. The experimental measurements indicate that the chiral signal persists, meaning scattering within the nanoscopic loops remains coherent, up to temperatures of the order of 150 K.

7 pages, 11 eps figures Published version. Minor changes

References in corpus (6)

• First Principles Calculation of Anomalous Hall Conductivity in Ferromagnetic bcc Fe
• Berry Curvature on the Fermi Surface: Anomalous Hall Effect as a Topological Fermi-Liquid Property
• Linear magnetization dependence of the intrinsic anomalous Hall effect
• Testing the Berry phase model for extraordinary Hall effect in SrRuO3
• Studies of the Anomalous Hall Effect and Magnetic Structure of Nd2Mo2O7 -Test of the Chirality Mechanism-
• Berry's phase contribution to the anomalous Hall effect of gadolinium

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