Superlattices of gadolinium and bismuth based thallium dichalcogenides as potential magnetic topological insulators

Using relativistic spin-polarized density functional theory calculations we investigate magnetism, electronic structure and topology of the ternary thallium gadolinium dichalcogenides TlGdZ2 (Z = Se and Te) as well as superlattices on their basis. We find TlGdZ2 to have an antiferromagnetic exchange...

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