The Impact of Local Strain Fields in Noncollinear Antiferromagnetic Films

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F24%3A00377221" target="_blank" >RIV/68407700:21230/24:00377221 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1002/adma.202401180" target="_blank" >https://doi.org/10.1002/adma.202401180</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adma.202401180" target="_blank" >10.1002/adma.202401180</a>

Result language

angličtina

Original language name

The Impact of Local Strain Fields in Noncollinear Antiferromagnetic Films

Original language description

Antiferromagnets hosting structural or magnetic order that breaks time reversal symmetry are of increasing interest for "beyond von Neumann" computing applications because the topology of their band structure allows for intrinsic physical properties, exploitable in integrated memory and logic function. One such group are the noncollinear antiferromagnets. Essential for domain manipulation is the existence of small net moments found routinely when the material is synthesized in thin film form and attributed to symmetry breaking caused by spin canting, either from the Dzyaloshinskii-Moriya interaction or from strain. Although the spin arrangement of these materials makes them highly sensitive to strain, there is little understanding about the influence of local strain fields caused by lattice defects on global properties, such as magnetization and anomalous Hall effect. This premise is investigated by examining noncollinear antiferromagnetic films that are either highly lattice mismatched or closely matched to their substrate. In either case, edge dislocation networks are generated and for the former case, these extend throughout the entire film thickness, creating large local strain fields. These strain fields allow for finite intrinsic magnetization in seemingly structurally relaxed films and influence the antiferromagnetic domain state and the intrinsic anomalous Hall effect. The properties of noncollinear antiferromagnets are highly sensitive to strain, including large local strain fields generated by dislocations. The influence of these on the global magnetization and transport properties is examined, finding that they enhance the magnetization but are deleterious to intrinsic properties important for application. This analysis is timely as efforts are made to integrate these materials into multilayer devices. image

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

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OECD FORD branch

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

Project

<a href="/en/project/GA23-06285S" target="_blank" >GA23-06285S: Novel ionic crystals and their surfaces as the key to future photovoltaic materials (NicePV)</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

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

Name of the periodical

Advanced Materials

ISSN

0935-9648

e-ISSN

1521-4095

Volume of the periodical

36

Issue of the periodical within the volume

27

Country of publishing house

DE - GERMANY

Number of pages

10

Pages from-to

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UT code for WoS article

001207581800001

EID of the result in the Scopus database

2-s2.0-85191097420