Understanding the $\mu$SR spectra of MnSi without magnetic polarons

Abstract

Transverse-field muon-spin rotation ($\mu$SR) experiments were performed on a single crystal sample of the non-centrosymmetric system MnSi. The observed angular dependence of the muon precession frequencies matches perfectly the one of the Mn-dipolar fields acting on the muons stopping at a 4a position of the crystallographic structure. The data provide a precise determination of the magnetic dipolar tensor. In addition, we have calculated the shape of the field distribution expected below the magnetic transition temperature $T_C$ at the 4a muon-site when no external magnetic field is applied. We show that this field distribution is consistent with the one reported by zero-field $\mu$SR studies. Finally, we present ab initio calculations based on the density-functional theory which confirm the position of the muon stopping site inferred from transverse-field $\mu$SR. In view of the presented evidence we conclude that the $\mu$SR response of MnSi can be perfectly and fully understood without invoking a hypothetical magnetic polaron state.

10 pages, 12 figures

References in corpus (1)

• Quantum states of muons in fluorides

Cited by in corpus (20)

• DFT+μ: Density Functional Theory for Muon Site Determination
• MuFinder: A program to determine and analyse muon stopping sites
• Putative helimagnetic phase in the kagome metal Co_3Sn_2-xIn_xS_2
• Intrinsic nature of spontaneous magnetic fields in superconductors with time-reversal symmetry breaking
• Muon spin rotation study of type-I superconductivity: elemental $\beta -$Sn
• Quantum effects in muon spin spectroscopy within the stochastic self-consistent harmonic approximation
• Magnetic structure of the MnGe helimagnet and representation analysis
• Computational Prediction of Muon Stopping Sites: a Novel Take on the Unperturbed Electrostatic Potential Method
• Dual nature of magnetism in MnSi
• First demonstration of tuning between the Kitaev and Ising limits in a honeycomb lattice
• Entanglement between a muon spin and $I>\frac{1}{2}$ nuclear spins
• Field-orientation-dependent magnetic phases in GdRu${}_2$Si${}_2$ probed with muon-spin spectroscopy
• Pressure tuning of competing interactions on a honeycomb lattice
• Local electronic structure of dilute hydrogen in $\beta$-MnO${}_2$
• Experimental determination of the spin Hamiltonian of the cubic chiral magnet MnSi
• Power-law dynamics in the spin-liquid kagome lattices SrCr8Ga4O19 and ZnCu3(OH)6Cl2
• Zero-field 29Si nuclear magnetic resonance signature of helimagnons in MnSi
• Origin of the suppression of magnetic order in MnSi under hydrostatic pressure
• Why paramagnetic chiral correlations in the long wavelength limit do not contribute to muon-spin relaxation
• Magnetism in $M_{1/3}$NbS${}_2$ ($M$ = Fe, V, Mn): insight into intercalated transition-metal dichalcogenides using $\mu$SR