Spin waves in full-polarized state of Dzyaloshinskii-Moriya helimagnets: Small-angle neutron scattering study

S. V. Grigoriev, A. S. Sukhanov, E. V. Altynbaev, S. -A. Siegfried, A. Heinemann, P. Kizhe, S. V. Maleyev

Результат исследований: Научные публикации в периодических изданияхстатья

20 Цитирования (Scopus)

Выдержка

We develop the technique to study the spin-wave dynamics of the full-polarized state of the Dzyaloshinskii-Moriya helimagnets by polarized small-angle neutron scattering. We have experimentally proven that the spin-waves dispersion in this state has the anisotropic form. We show that the neutron scattering image displays a circle with a certain radius which is centered at the momentum transfer corresponding to the helix wave vector in helimagnetic phase k(s), which is oriented along the applied magnetic field H. The radius of this circle is directly related to the spin-wave stiffness of this system. This scattering depends on the neutron polarization showing the one-handed nature of the spin waves in Dzyaloshinskii-Moriya helimagnets in the full-polarized phase. We show that the spin-wave stiffness A for MnSi helimagnet decreased twice as the temperature increases from zero to the critical temperature T-c.
Язык оригиналаанглийский
Номер статьи220415
Число страниц5
ЖурналPhysical Review B - Condensed Matter and Materials Physics
Том92
Номер выпуска22
DOI
СостояниеОпубликовано - 2015

Отпечаток

Spin waves
Neutron scattering
magnons
neutron scattering
stiffness
Stiffness
radii
Momentum transfer
wave dispersion
helices
momentum transfer
critical temperature
Neutrons
Scattering
Polarization
Magnetic fields
neutrons
Temperature
polarization
scattering

Предметные области Scopus

  • Физика и астрономия (все)

Цитировать

Grigoriev, S. V. ; Sukhanov, A. S. ; Altynbaev, E. V. ; Siegfried, S. -A. ; Heinemann, A. ; Kizhe, P. ; Maleyev, S. V. / Spin waves in full-polarized state of Dzyaloshinskii-Moriya helimagnets: Small-angle neutron scattering study. В: Physical Review B - Condensed Matter and Materials Physics. 2015 ; Том 92, № 22.
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title = "Spin waves in full-polarized state of Dzyaloshinskii-Moriya helimagnets: Small-angle neutron scattering study",
abstract = "We develop the technique to study the spin-wave dynamics of the full-polarized state of the Dzyaloshinskii-Moriya helimagnets by polarized small-angle neutron scattering. We have experimentally proven that the spin-waves dispersion in this state has the anisotropic form. We show that the neutron scattering image displays a circle with a certain radius which is centered at the momentum transfer corresponding to the helix wave vector in helimagnetic phase k(s), which is oriented along the applied magnetic field H. The radius of this circle is directly related to the spin-wave stiffness of this system. This scattering depends on the neutron polarization showing the one-handed nature of the spin waves in Dzyaloshinskii-Moriya helimagnets in the full-polarized phase. We show that the spin-wave stiffness A for MnSi helimagnet decreased twice as the temperature increases from zero to the critical temperature T-c.",
author = "Grigoriev, {S. V.} and Sukhanov, {A. S.} and Altynbaev, {E. V.} and Siegfried, {S. -A.} and A. Heinemann and P. Kizhe and Maleyev, {S. V.}",
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doi = "10.1103/PhysRevB.92.220415",
language = "English",
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journal = "Physical Review B-Condensed Matter",
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Spin waves in full-polarized state of Dzyaloshinskii-Moriya helimagnets: Small-angle neutron scattering study. / Grigoriev, S. V.; Sukhanov, A. S.; Altynbaev, E. V.; Siegfried, S. -A.; Heinemann, A.; Kizhe, P.; Maleyev, S. V.

В: Physical Review B - Condensed Matter and Materials Physics, Том 92, № 22, 220415, 2015.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - Spin waves in full-polarized state of Dzyaloshinskii-Moriya helimagnets: Small-angle neutron scattering study

AU - Grigoriev, S. V.

AU - Sukhanov, A. S.

AU - Altynbaev, E. V.

AU - Siegfried, S. -A.

AU - Heinemann, A.

AU - Kizhe, P.

AU - Maleyev, S. V.

PY - 2015

Y1 - 2015

N2 - We develop the technique to study the spin-wave dynamics of the full-polarized state of the Dzyaloshinskii-Moriya helimagnets by polarized small-angle neutron scattering. We have experimentally proven that the spin-waves dispersion in this state has the anisotropic form. We show that the neutron scattering image displays a circle with a certain radius which is centered at the momentum transfer corresponding to the helix wave vector in helimagnetic phase k(s), which is oriented along the applied magnetic field H. The radius of this circle is directly related to the spin-wave stiffness of this system. This scattering depends on the neutron polarization showing the one-handed nature of the spin waves in Dzyaloshinskii-Moriya helimagnets in the full-polarized phase. We show that the spin-wave stiffness A for MnSi helimagnet decreased twice as the temperature increases from zero to the critical temperature T-c.

AB - We develop the technique to study the spin-wave dynamics of the full-polarized state of the Dzyaloshinskii-Moriya helimagnets by polarized small-angle neutron scattering. We have experimentally proven that the spin-waves dispersion in this state has the anisotropic form. We show that the neutron scattering image displays a circle with a certain radius which is centered at the momentum transfer corresponding to the helix wave vector in helimagnetic phase k(s), which is oriented along the applied magnetic field H. The radius of this circle is directly related to the spin-wave stiffness of this system. This scattering depends on the neutron polarization showing the one-handed nature of the spin waves in Dzyaloshinskii-Moriya helimagnets in the full-polarized phase. We show that the spin-wave stiffness A for MnSi helimagnet decreased twice as the temperature increases from zero to the critical temperature T-c.

U2 - 10.1103/PhysRevB.92.220415

DO - 10.1103/PhysRevB.92.220415

M3 - Article

VL - 92

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 22

M1 - 220415

ER -