Correlation stabilized ferromagnetic MnRuAs with distorted kagome lattice

Abstract

We present an in-depth analysis of MnRuAs, a compound crystallizing in the P$\bar{6}$2m symmetry with a distorted kagome lattice, revealing its distinctive structural, magnetic, and electronic properties through state-of-the-art ab initio calculations. By incorporating strong correlation effects using the DFT+U approach, we demonstrate the stabilization of MnRuAs, transforming its inherent dynamical instability into a robust ferromagnetic state with significant coupling along the $c$ axis. The calculated magnon dispersion reveals a parabolic profile with a minimum at the $\Gamma$ point, indicative of ferromagnetic behavior. Furthermore, MnRuAs exhibits intriguing electronic properties, including quasi-one-dimensional Fermi surface and the formation of nodal sphere. Our study also delves into the electronic surface states and constant energy contours, offering valuable insights into the complex physics of this material.

14 pages, 8 figures + supplement: 6 pages and 9 figures

References in corpus (14)

• Implementation strategies in phonopy and phono3py
• CsV${}_3$Sb${}_5$: a ${\mathbb{Z}}_2$ topological kagome metal with a superconducting ground state
• Discovery of a quantum limit Chern magnet TbMn6Sn6
• Negative flat band magnetism in a spin-orbit coupled correlated kagome magnet
• Anomalous Hall effect of ferromagnetic Fe3Sn2 single crystal with geometrically frustrated kagome lattice
• Topological Quantum Materials with Kagome Lattice
• Exchange-biased topological transverse thermoelectric effects in a Kagome ferrimagnet
• Chiral phonons in honeycomb sublattice of layered CoSn-like compounds
• Visualizing symmetry-breaking electronic orders in epitaxial Kagome magnet FeSn films
• Evidence of fully-gapped superconductivity in NbReSi: A combined $\mu$SR and NMR study
• Tuning the topological character of half-Heusler systems: A comparative study on Y$T$Bi ($T$ = Pd, Pt)
• Chemical Rules for Stacked Kagome and Honeycomb Topological Semimetals
• Spin reorientation in FeCrAs revealed by single-crystal neutron diffraction
• Pressure Engineering of the Dirac Fermions in Quasi-One-Dimensional Tl${}_2$Mo${}_6$Se${}_6$