Two-dimensional altermagnets: Superconductivity in a minimal microscopic model
Peer reviewed, Journal article
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Date
2023Metadata
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- Institutt for fysikk [2668]
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Original version
10.1103/PhysRevB.108.224421Abstract
We propose a minimal toy model for a two-dimensional altermagnet. The model unravels altermagnetic properties at a microscopic level. We find spin-split electron and nondegenerate magnon bands with a d -wave symmetry. We use the model to explore magnon-mediated superconductivity in altermagnets. The dominant superconducting state is spin polarized with a p -wave symmetry. The state adopts its characteristics from the spin-split electron bands. Furthermore, we find that the superconducting critical temperature of altermagnets can be significantly enhanced by tuning the chemical potential. Two-dimensional altermagnets: Superconductivity in a minimal microscopic model