Is the kagome charge-density wave electronic or phonon driven? · revision history
Revision 2
Accepted · cosmetic change · record
Changes against revision 1:
- Title · changed
- Revision 1: Is the kagome charge-density wave electronic or phonon driven
- Revision 2: Is the kagome charge-density wave electronic or phonon driven?
- Plain
- The charge order could arise from electrons near special points of the band structure interacting with each other, or from coupling to lattice vibrations that soften.
- Precise
- Determine whether the charge-density wave of AV3Sb5 is driven by electronic instabilities of the van Hove singularities at M (nesting and interactions) or by momentum-dependent electron-phonon coupling with a soft breathing phonon. An answer is inelastic x-ray measurements of phonon softening plus momentum-resolved electron-phonon coupling compared with the electronic susceptibility.
- Settled by
- Inelastic x-ray scattering of the phonon dispersion versus temperature combined with first-principles electron-phonon and electronic susceptibility calculations.
- Kind
- phenomenon
- Answer type
- mechanism
- References
- (empty)
- Literature status
- contested
- Status note
- (empty)
- Posed since
- 2021
Decisions
- Accepted (cosmetic change) · 2026-10-15 · record