Asymmetric slow dynamics of the skyrmion lattice in MnSi

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00574013" target="_blank" >RIV/61389005:_____/23:00574013 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1038/s41567-023-02120-5" target="_blank" >https://doi.org/10.1038/s41567-023-02120-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41567-023-02120-5" target="_blank" >10.1038/s41567-023-02120-5</a>

Result language

angličtina

Original language name

Asymmetric slow dynamics of the skyrmion lattice in MnSi

Original language description

Skyrmions are localized magnetic textures that form lattices in some magnetic materials. Neutron spin-echo measurements have now been able to observe topological effects on the low-energy collective excitations of a skrymion lattice.nnSome magnetic systems feature spin textures, real-space patterns in the orientation of spins that can topologically form non-trivial configurations. Among them, a vortex-like spin swirling texture known as a magnetic skyrmion has attracted particular attention. Lattices of skyrmions form in the helimagnet MnSi with a periodicity of 18 nm, which makes them amenable to investigation by Lorentz transmission electron microscopy in real space and by small-angle neutron scattering in momentum space. However, the dynamics of the skyrmion lattice have not been studied in detail because of the difficulty of inelastic neutron scattering measurements that can measure the dynamic structure factor at the microelectronvolts energy scale at small wavevectors. Here we examine the low-energy excitations of the skyrmion state in MnSi by using the neutron spin-echo technique under small-angle neutron scattering conditions. We observe an asymmetric dispersion of the phason excitations of the lattice because of the string-like structure of the skyrmion cores.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nature Physics

ISSN

1745-2473

e-ISSN

1745-2481

Volume of the periodical

19

Issue of the periodical within the volume

7

Country of publishing house

DE - GERMANY

Number of pages

7

Pages from-to

1476-1481

UT code for WoS article

001027337700002

EID of the result in the Scopus database

2-s2.0-85164810717