Implications of the B20 Crystal Structure for the Magneto-electronic Structure of MnSi

Abstract

Due to increased interest in the unusual magnetic and transport behavior of MnSi and its possible relation to its crystal structure (B20) which has unusual coordination and lacks inversion symmetry, we provide a detailed analysis of the electronic and magnetic structure of MnSi. The non-symmorphic P2_13 spacegroup leads to unusual fourfold degenerate states at the zone corner R point, as well as ``sticking'' of pairs of bands throughout the entire Brillouin zone surface. The resulting Fermi surface acquires unusual features as a result of the band sticking. For the ferromagnetic system (neglecting the long wavelength spin spiral) with the observed moment of 0.4 μ_B/Mn, one of the fourfold levels at R in the minority bands falls at the Fermi energy (E_F), and a threefold majority level at k=0 also falls at E_F. The band sticking and presence of bands with vanishing velocity at E_F imply an unusually large phase space for long wavelength, low energy interband transitions that will be important for understanding the unusual resistivity and far infrared optical behavior.

arXiv commentNine two-column pages with eight figures included

References in corpus (3)

• Superconductivty without inversion symmetry: MnSi versus CePt_3Si
• Heavy Carriers and Non-Drude Optical Conductivity in MnSi
• Phase Inhomogeneity of the Itinerant Ferromagnet MnSi at High Pressures

Cited by in corpus (36)

• Robust formation of skyrmions and topological Hall effect in epitaxial thin films of MnSi
• Ultrafast generation of skyrmionic defects with vortex beams: printing laser profiles on magnets
• Giant generic topological Hall resistivity of MnSi under pressure
• Crystal Symmetry, Electron-Phonon Coupling, and Superconducting Tendencies in Li${}_2$Pd${}_3$B and Li${}_2$Pt${}_3$B
• Phase-Space Berry Phases in Chiral Magnets: Dzyaloshinskii-Moriya Interaction and the Charge of Skyrmions
• Anomalous electrical magnetochiral effect by chiral spin fluctuation
• Metal-insulator transition and magnetism in correlated band insulator: FeSi and Fe${}_{1-x}$Co${}_x$Si
• Magnetic, thermodynamic, and electrical transport properties of the noncentrosymmetric B20 germanides MnGe and CoGe
• Understanding the $\mu$SR spectra of MnSi without magnetic polarons
• Heisenberg and anisotropic exchange interactions in magnetic materials with correlated electronic structure and significant spin-orbit coupling
• Ab initio analysis of magnetic properties of prototype B20 chiral magnet FeGe
• A Raman study of the temperature and magnetic field dependence of electronic and lattice properties in MnSi
• Muon contact hyperfine field in metals: A DFT calculation
• Walker breakdown with a twist: Dynamics of multilayer domain walls and skyrmions driven by spin-orbit torque
• Effect of Negative Pressure on the Prototypical Itinerant Magnet MnSi
• Investigating the electronic structure of MSi (M = Cr, Mn, Fe $\&$ Co) and calculating $\textit{$U_{eff}$}$ $\&$ $\text{J}$ by using cDFT
• Density functional theory study of skyrmion pinning by atomic defects in MnSi
• Transport Theory of Metallic B20 Helimagnets
• Unconventional Hund Metal in a Weak Itinerant Ferromagnet
• Magnetic molecular orbitals in MnSi
• Strong-Correlation Derived Spin-Fermion Model for Skyrmions in MnGe
• Magnetic phase diagram, magnetotransport and inverse magnetocaloric effect in the noncollinear antiferromagnet Mn${}_5$Si${}_3$
• The importance of thermal disorder and electronic occupation for the T-dependence of the optical conductivity in FeSi and MnSi
• Quasiparticle characteristics of the weakly ferromagnetic Hund's metal MnSi
• Symmetry of the Fermi surface and evolution of the electronic structure across the paramagnetic-helimagnetic transition in MnSi/Si(111)
• Spin-Orbit Interaction Effects in the Electronic Structure of B20-type CoSi: First-Principles Density Functional Study
• Topological energy barrier for skyrmion lattice formation in MnSi
• Electronic and dynamical properties of cobalt monogermanide CoGe phases under pressure
• Electronic relaxation rates in metallic ferromagnets
• Generic non-Fermi-liquid behavior of the resistivity in magnets with ferromagnetic, helical, or skyrmionic order
• The 'Higgs' amplitude mode in weak ferromagnetic metals
• Effect of Ge-substitution on Magnetic Properties in the Itinerant Chiral Magnet MnSi
• Small-angle interband scattering as the origin of the $T^{3/2}$ resistivity in MnSi
• Origin of the suppression of magnetic order in MnSi under hydrostatic pressure
• Multistage development of short-range spin correlations and weak magnetic order in the two coupled trillium lattices of K2Fe2(MoO4)(PO4)2
• Altermagnetism and Weak Magnetism in the Insulating Distorted Perovskite Antiferromagnet NaOsO${}_3$