Pair density wave order from non-symmorphic momentum symmetry

Matteo Dürrnagel; C. Alexander Baum; Michael Klett; Lennart Klebl; Ronny Thomale

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arXiv · 2609.05603

Pair density wave order from non-symmorphic momentum symmetry

Matteo Dürrnagel·C. Alexander Baum·Michael Klett·Lennart Klebl·Ronny Thomale

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Abstract

We develop a class of microscopic lattice models in which pair density wave order emerges in the asymptotically exact weak coupling limit. The underlying mechanism is due to non-symmorphic momentum symmetry implied by the models' projective space group representation of electrons. Our mechanism suggests moir\'e systems and extended s-wave altermagnets as potential hosts for pair density wave order.

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Matteo Dürrnagel, C. Alexander Baum, Michael Klett, Lennart Klebl, Ronny Thomale. 2026-09-04. Pair density wave order from non-symmorphic momentum symmetry. https://arxiv.org/abs/2609.05603

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