Low-energy modeling of three-dimensional topological insulator nanostructures

Zsurka, Eduárd; Wang, Cheng; Legendre, Julian; Di Miceli, Daniele; Serra, Llorenç; Grützmacher, Detlev; Schmidt, Thomas L.; Rüßmann, Philipp; Moors, Kristof

doi:10.1103/physrevmaterials.8.084204

Phys. Rev. Materials

2024

DOI: 10.1103/physrevmaterials.8.084204

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Low-energy modeling of three-dimensional topological insulator nanostructures

Eduárd Zsurka,

Cheng Wang,

Julian Legendre

et al.

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2024

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High-throughput magnetic co-doping and design of exchange interactions in topological insulators

Mozumder,

Wasmer,

Antognini Silva

et al. 2024

Phys. Rev. Materials

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Using high-throughput automation of impurity embedding simulations, we create a database of 3d and 4d transition metal defects embedded into the prototypical topological insulators (TIs) Bi2Te3 and Bi2Se3. We simulate both single impurities as well as impurity dimers at different impurity-impurity distances inside the topological insulator matrix. We extract changes to magnetic moments, analyze the polarizability of nonmagnetic impurity atoms via nearby magnetic impurity atoms and calculate the exchange coupling constants for a Heisenberg Hamiltonian. We uncover chemical trends in the exchange coupling constants and discuss the impurities' abilities with respect to magnetic order in the fields of quantum anomalous Hall insulators and topological quantum computing. In particular, we confirm that co-doping of different magnetic dopants is a viable strategy to engineer the magnetic ground state in magnetic TIs. Published by the American Physical Society 2024

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High-throughput magnetic co-doping and design of exchange interactions in topological insulators

Mozumder,

Wasmer,

Antognini Silva

et al. 2024

Phys. Rev. Materials

View full text Add to dashboard Cite

show abstract

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Low-energy modeling of three-dimensional topological insulator nanostructures

Cited by 1 publication

References 82 publications

High-throughput magnetic co-doping and design of exchange interactions in topological insulators

High-throughput magnetic co-doping and design of exchange interactions in topological insulators

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