Role of Magnetic Defects in Tuning Ground States of Magnetic Topological Insulators (Adv. Mater. 21/2023)

Magnetic Topological Insulators Inelastic neutron scattering measurements, as reported by Farhan Islam and co‐workers in article number 2209951, reveal the formation of linear Mn–Te–Mn antiferromagnetic dimers in Mn‐doped Sb2Te3 magnetic topological insulators, following the Goodenough–Kanamori supe...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2023-05, Vol.35 (21), p.n/a
Main Authors: Islam, Farhan, Lee, Yongbin, Pajerowski, Daniel M., Oh, JinSu, Tian, Wei, Zhou, Lin, Yan, Jiaqiang, Ke, Liqin, McQueeney, Robert J., Vaknin, David
Format: Article
Language:English
Subjects:
Antiferromagnetism
Defects
ferromagnetic correlation
Ferromagnetism
Ground state
Inelastic scattering
localized dimer formation
magnetic inelastic neutron scattering
magnetic topological insulators
MATERIALS SCIENCE
Neutron scattering
Topological insulators
Tuning
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Summary:Magnetic Topological Insulators Inelastic neutron scattering measurements, as reported by Farhan Islam and co‐workers in article number 2209951, reveal the formation of linear Mn–Te–Mn antiferromagnetic dimers in Mn‐doped Sb2Te3 magnetic topological insulators, following the Goodenough–Kanamori superexchange rule. The experiments also identify ferromagnetic correlations within quintuple blocks and across the van der Waals gap, which mediate long‐range ferromagnetic order. These competing interactions explain the role of defects in tuning ground states in magnetic topological insulators.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.202370149