Giant Anomalous Hall Effect in Kagome Nodal Surface Semimetal Fe₃Ge

2025/01/26 by Li, Shu-Xiang, Wang, Wencheng, Xu, Sheng +8 · 1 citation
#FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall)

paper · doi:10.48550/arxiv.2501.15424

Abstract

It is well known that the intrinsic anomalous Hall effect (AHE) arises from the integration of the non-zero Berry curvature (BC), conventionally observed in the Dirac/Weyl and nodal-line semimetals. Moreover, nodal surface semimetals are expected to exhibit more significant BC under the prevalence of degenerate points near the Fermi level. In this work, we report the detection of a giant AHE in the Kagome magnet Fe₃Ge with a two-dimensional (2D) nodal surface (NS) at k_z=π plane, exhibiting an anomalous Hall conductivity (AHC) of 1500 Ω^-1cm^-1 at 160 K, the highest among all reported Kagome topological materials. This finding suggests a new platform for searching large AHC materials and facilitates potential room-temperature applications in spintronic devices and quantum computing.

Cited by

• Large Anomalous and Topological Hall Effect and Nernst Effect in a Dirac Kagome Magnet Fe3Ge

Related

• Colossal Anomalous Hall Conductivity and Topological Hall Effect in Ferromagnetic Kagome Metal Nd₃Al
• Large Anomalous and Topological Hall Effect and Nernst Effect in a Dirac Kagome Magnet Fe3Ge
• Anomalous, anomalous Hall effect in the layered, Kagome, Dirac semimetal KV₃Sb₅
• Spectroscopic origin of giant anomalous Hall effect in an interwoven magnetic kagome metal
• Surprisingly large anomalous Hall effect and giant negative magnetoresistance in half-topological semimetals