Lattice dynamics in the itinerant helical magnet MnSi

D. Lamago, E. S. Clementyev, A. S. Ivanov, R. Heid, J.-M. Mignot, A. E. Petrova, and P. A. Alekseev
Phys. Rev. B 82, 144307 – Published 25 October 2010

Abstract

The phonon dispersion relations in MnSi were measured using inelastic neutron scattering. At the same time, calculations of the lattice dynamics of MnSi were carried out in the framework of the density-functional theory using both the local-density and the generalized gradient approximations. The calculations match most of the phonon modes in the frequency range up to 40 meV, if they are performed using the experimental lattice constant. Spin-polarized calculations for ferromagnetic ground states result in subtle modifications of the dispersion curves, which further improve the description, in particular, for the acoustic branches.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 8 April 2010

DOI:https://doi.org/10.1103/PhysRevB.82.144307

©2010 American Physical Society

Authors & Affiliations

D. Lamago1,2, E. S. Clementyev3,4, A. S. Ivanov5, R. Heid1, J.-M. Mignot2, A. E. Petrova6, and P. A. Alekseev3

  • 1Institut für Festkörperphysik, Karlsruhe Institute of Technology (KIT), P.O. Box 3640, D-76021 Karlsruhe, Germany
  • 2Laboratoire Léon Brillouin, CEA-Saclay, F-91191 Gif sur Yvette Cedex, France
  • 3ISSSPh, Russian Research Centre “Kurchatov Institute,” 123182 Moscow, Russia
  • 4LNS, Institute for Nuclear Research, Russian Academy of Sciences, Troitsk, Moscow Region, Russia
  • 5Institut Laue Langevin, 156X, 38042 Grenoble Cedex 9, France
  • 6Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk 142190, Moscow Region, Russia

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 82, Iss. 14 — 1 October 2010

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×