On the robustness of the MnSi magnetic structure determined by muon spin rotation

Abstract

Muon spin rotation (muSR) spectra recorded for manganese silicide MnSi and interpreted in terms of a quantitative analysis constrained by symmetry arguments were recently published. The magnetic structures of MnSi in zero-field at low temperature and in the conical phase near the magnetic phase transition were shown to substantially deviate from the expected helical and conical structures. Here, we present material backing the previous results obtained in zero-field. First, from simulations of the field distributions experienced by the muons as a function of relevant parameters we confirm the uniqueness of the initial interpretation and illustrate the remarkable complementarity of neutron scattering and muSR for the MnSi magnetic structure determination. Second we present the result of a muSR experiment performed on MnSi crystallites grown in a Zn-flux and compare it with the previous data recorded with a crystal obtained from Czochralski pulling. We find the magnetic structure for the two types of crystals to be identical within experimental uncertainties. We finally address the question of a possible muon-induced effect by presenting transverse field muSR spectra recorded in a wide range of temperature and field intensity. The field distribution parameters perfectly scale with the macroscopic magnetization, ruling out a muon-induced effect.

arXiv comment9 pages, 5 figures

References in corpus (14)

• Skyrmion Lattice in a Chiral Magnet
• Muon spin rotation and relaxation in magnetic materials
• Magnetic order and superconductivity in LSCO: a review
• An anisotropic local modification of crystal field levels in Pr-based pyrochlores: a muon-induced effect modelled using density functional theory
• Understanding the $\mu$SR spectra of MnSi without magnetic polarons
• Muon contact hyperfine field in metals: A DFT calculation
• Probing the extended non-Fermi liquid regimes of MnSi and Fe
• Weak quasistatic magnetism in the frustrated Kondo lattice Pr_2Ir_2O_7
• Transverse field muon-spin rotation signature of the skyrmion lattice phase in Cu2OSeO3
• Pressure Collapse of the Magnetic Ordering in MnSi via Thermal Expansion
• Determination of the zero-field magnetic structure of the helimagnet MnSi at low temperature
• Unconventional magnetic order in the conical state of MnSi
• Absence of magnetic phase separation in MnSi under pressure
• New insights for the description of magnetic correlations inferred from muSR

Cited by in corpus (5)

• Quantum effects in muon spin spectroscopy within the stochastic self-consistent harmonic approximation
• Dual nature of magnetism in MnSi
• Experimental determination of the spin Hamiltonian of the cubic chiral magnet MnSi
• Zero-field 29Si nuclear magnetic resonance signature of helimagnons in MnSi
• Origin of the suppression of magnetic order in MnSi under hydrostatic pressure