Peierls distortion

{
  "id": "MLC-T-CHM-008582",
  "term": "Peierls distortion",
  "field": "Chemistry",
  "definition": "A distortion of the crystal lattice in one-dimensional metallic or semiconducting systems that leads to a lowering of the electronic energy by opening a band gap at the Fermi level. This structural change results in the dimerization of atoms and transforms the material from a conductor to a semiconductor or insulator. It is a consequence of electron-phonon coupling.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "Fermi level",
    "Jahn-Teller effect",
    "conduction band",
    "dimerization",
    "oligomerization"
  ],
  "references": [
    "PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 381 (https://doi.org/10.1351/pac200779030293)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/peierls-distortion/"
}