DOAJ Open Access 2025

Three-dimensional nature of anomalous Hall conductivity in YMn6Sn6−xGax, x ≈ 0.55

Hari Bhandari Zhenhua Ning Po-Hao Chang Peter E. Siegfried Resham B. Regmi +6 lainnya

Abstrak

Abstract The unique geometry of kagome lattices leads to topological features such as flat bands and Dirac cones. When paired with ferromagnetism and a Fermi level near Dirac points, they offer a platform for realizing topological Chern magnetotransport. This prospect recently drew interest in the ferrimagnetic kagome metal TbMn6Sn6. However, density functional theory (DFT) calculations indicate that its 2D Chern gap lies well above the Fermi energy, raising questions about its role in anomalous Hall conductivity. Here, we study YMn6Sn5.45Ga0.55, a structurally and electronically similar material, and find that its intrinsic anomalous Hall effect is three-dimensional. This demonstrates that the Hall response in such compounds does not originate from 2D Chern gaps. Additionally, we confirm that the newly proposed empirical scaling relation for extrinsic Hall conductivity is universally governed by spin fluctuations.

Topik & Kata Kunci

Materials of engineering and construction. Mechanics of materials Atomic physics. Constitution and properties of matter

Penulis (11)

Hari Bhandari

Zhenhua Ning

Po-Hao Chang

Peter E. Siegfried

Resham B. Regmi

Mohamed El. Gazzah

Albert V. Davydov

Allen G. Oliver

Liqin Ke

Igor I. Mazin

Nirmal J. Ghimire

Format Sitasi

APA MLA BibTeX

Bhandari, H., Ning, Z., Chang, P., Siegfried, P.E., Regmi, R.B., Gazzah, M.E. et al. (2025). Three-dimensional nature of anomalous Hall conductivity in YMn6Sn6−xGax, x ≈ 0.55. https://doi.org/10.1038/s41535-025-00816-w

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Informasi Jurnal

Tahun Terbit: 2025
Sumber Database: DOAJ
DOI: 10.1038/s41535-025-00816-w
Akses: Open Access ✓