English

Interpreting the 4-index Notation for Hexagonal Systems

Other Condensed Matter 2010-06-16 v1 Mathematical Physics math.MP

Abstract

A four index notation (e.g. (10-11) is often used to denote reciprocal lattice vectors or crystal faces of hexagonal crystals. The purposes of this notation have never been fully explained. This note clarifies the underlying mathematics of a symmetric overcomplete basis. This simplifies and improves the usefulness of the notation.

Keywords

Cite

@article{arxiv.1006.2842,
  title  = {Interpreting the 4-index Notation for Hexagonal Systems},
  author = {Philip B. Allen},
  journal= {arXiv preprint arXiv:1006.2842},
  year   = {2010}
}

Comments

10 pages with one embedded figure

R2 v1 2026-06-21T15:36:10.082Z