https://jhell.imipolex.biz/tags/epwe/ Recent content in Epwe on Jack Hellerstedt Hugo en-us Mon, 20 Oct 2025 12:00:00 +1000 https://jhell.imipolex.biz/2025/10/20/chirality-in-2d-metal-organic-framework/ Mon, 20 Oct 2025 12:00:00 +1000 https://jhell.imipolex.biz/2025/10/20/chirality-in-2d-metal-organic-framework/ <p>Another installment in the annals of the bullying of the Shockley surface state, this time the trick isn’t exotic adatoms or massive molecular weight, just a 120° tilt of hexaazatriphenylene (HAT) ligands that converts an achiral lattice into a pair of enantiomeric 2-D metal–organic frameworks. The result: <strong>chirality-imposed scattering potentials that lift degeneracies and open ΔE ≈ 80 meV gaps</strong> in the Ag(111) two-dimensional electron gas while leaving the global periodicity intact.</p>