Cooper pair induced frustration and nematicity of two-dimensional magnetic adatom lattices

We propose utilizing the Cooper pair to induce magnetic frustration in systems of two-dimensional (2D) magnetic adatom lattices on s-wave superconducting surfaces. The competition between singlet electron correlations and the RKKY coupling is shown to lead to a variety of hidden-order states that br...

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Bibliographic Details
Published in:Physical review. B 2018-05, Vol.97 (17), Article 174412
Main Authors: Schecter, Michael, Syljuåsen, Olav F., Paaske, Jens
Format: Article
Language:English
Subjects:
Adatoms
Cooper pairs
Frustration
Lattices
Phase diagrams
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Summary:We propose utilizing the Cooper pair to induce magnetic frustration in systems of two-dimensional (2D) magnetic adatom lattices on s-wave superconducting surfaces. The competition between singlet electron correlations and the RKKY coupling is shown to lead to a variety of hidden-order states that break the point-group symmetry of the 2D adatom lattice at finite temperature. The phase diagram is constructed using a newly developed effective bond theory [M. Schecter et al., Phys. Rev. Lett. 119, 157202 (2017)], and exhibits broad regions of long-range vestigial nematic order.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.97.174412