In-situ monitoring the magnetotransport signature of topological transitions in a chiral magnet

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00618912" target="_blank" >RIV/68378271:_____/25:00618912 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0367771" target="_blank" >https://hdl.handle.net/11104/0367771</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/smtd.202401875" target="_blank" >10.1002/smtd.202401875</a>

Jazyk výsledku

angličtina

Název v původním jazyce

In-situ monitoring the magnetotransport signature of topological transitions in a chiral magnet

Popis výsledku v původním jazyce

Emerging magnetic fields related to the presence of topologically protected spin textures such as skyrmions are expected to give rise to additional, topology-related contributions to the Hall effect. In order to doubtlessly identify this so-called topological Hall effect, it is crucial to disentangle such contributions from the anomalous Hall effect. This necessitates a direct correlation of the transversal Hall voltage with the underlying magnetic textures. We utilize a novel measurement platform that allows to acquire high-resolution Lorentz transmission electron microscopy images of magnetic textures as a function of an external magnetic field and to concurrently measure the (anomalous) Hall voltage in-situ in the microscope on one and the same specimen. We use this approach to investigate the transport signatures of the chiral soliton lattice and antiskyrmions in Mn1.4PtSn.Notably, the observed textures allow to fully understand the measured Hall voltage without the need of any additional contributions due to a topological Hall effect, and the field-controlled formation and annihilation of anstiskyrmions are found to have no effect on the measurend Hall voltage.

Název v anglickém jazyce

In-situ monitoring the magnetotransport signature of topological transitions in a chiral magnet

Popis výsledku anglicky

Emerging magnetic fields related to the presence of topologically protected spin textures such as skyrmions are expected to give rise to additional, topology-related contributions to the Hall effect. In order to doubtlessly identify this so-called topological Hall effect, it is crucial to disentangle such contributions from the anomalous Hall effect. This necessitates a direct correlation of the transversal Hall voltage with the underlying magnetic textures. We utilize a novel measurement platform that allows to acquire high-resolution Lorentz transmission electron microscopy images of magnetic textures as a function of an external magnetic field and to concurrently measure the (anomalous) Hall voltage in-situ in the microscope on one and the same specimen. We use this approach to investigate the transport signatures of the chiral soliton lattice and antiskyrmions in Mn1.4PtSn.Notably, the observed textures allow to fully understand the measured Hall voltage without the need of any additional contributions due to a topological Hall effect, and the field-controlled formation and annihilation of anstiskyrmions are found to have no effect on the measurend Hall voltage.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/GM22-22000M" target="_blank" >GM22-22000M: Multipólové antiferromagnety: Nové vzájemně propojené kapitoly v krystalografii, pásové strukture a elektronice</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Small Methods

ISSN

2366-9608

e-ISSN

2366-9608

Svazek periodika

9

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

2401875

Kód UT WoS článku

001419070600001

EID výsledku v databázi Scopus

2-s2.0-85218818248