Weak attractive interactions at a spin-polarized Van Hove singularity drive pair density wave or charge density wave order depending on the mass anisotropy, while repulsive interactions leave the system stable.
The physics of pair-density waves: Cuprate supercon- ductors and beyond,
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Charge and pair density waves in a spin and valley-polarized system at a Van-Hove singularity
Weak attractive interactions at a spin-polarized Van Hove singularity drive pair density wave or charge density wave order depending on the mass anisotropy, while repulsive interactions leave the system stable.