Surface excess conductivity

{
  "id": "MLC-T-CHM-011642",
  "term": "Surface excess conductivity",
  "field": "Chemistry",
  "definition": "The additional electrical conductivity observed at an interface or surface compared to the bulk phase. It arises from the accumulation or depletion of charge carriers in the interfacial region. This phenomenon is particularly relevant in colloidal systems and at semiconductor surfaces, where charge distribution differs from the interior.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "conductivity"
  ],
  "references": [
    "PAC, 1972, 31, 577. 'Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry' on page 621 (https://doi.org/10.1351/pac197231040577)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/surface-excess-conductivity/"
}