Source / pinned edition
Band Theory of Solids
Source of package openstax.condensed_matter · OpenStax University Physics, ch. 9 Condensed Matter Physics, module m58599
- work
- urn:openstax:clir:condensed-matter#M58599
- number
- OpenStax University Physics, ch. 9 Condensed Matter Physics, module m58599
- kind
- urn:openstax:clir:condensed-matter#treatise
m58599/index.cnxml at commit d0ed34a (main, 2026-06-11)
- edition
- urn:openstax:clir:condensed-matter#M58599_MAIN
- language
- en
- officiality
- official
- materialisation
- PINNED_OFFICIAL_BYTES
- life cycle
- adopted: 2026-06-11
Publications
| URI | Type | documentHash | Retrieved |
|---|---|---|---|
| https://raw.githubusercontent.com/openstax/osbooks-university-physics-bundle/d0ed34a5851119a42e3d972dfc0ff49e4663977c/modules/m58599/index.cnxml | application/xml; charset=utf-8 | sha256:d743023f6b5ae2f57e6492877aefe3ddd69a3467165a1a040556986d093ac529 | 2026-09-06T00:00:00Z |
Fragments — 7
module/m58599#fs-id1172102031756 · section · referenced by: 2
en · official · sha256:fddea289239a8fe41191a754cf43e9d2210c240b232088a7c1ba5c29ddc97afa
<para id="fs-id1172102031756">Energy bands differ in the number of electrons they hold. In the 1<emphasis effect="italics">s</emphasis> and 2<emphasis effect="italics">s</emphasis> energy bands, each energy level holds up to two electrons (spin up and spin down), so this band has a maximum occupancy of 2<emphasis effect="italics">N</emphasis> electrons. In the 2<emphasis effect="italics">p</emphasis> energy band, each energy level holds up to six electrons, so this band has a maximum occupancy of 6<emphasis effect="italics">N</emphasis> electrons (<link target-id="CNX_UPhysics_42_05_EnBands"/>).</para>Referencing norms: PBandHoldsSixPerAtom, SBandHoldsTwoPerAtom
module/m58599#fs-id1172099478632 · defn · referenced by: 1
en · official · sha256:f242483ae07e8b2e57643fefe4b828991d864c40551679648622eea2e2420e2c
<definition id="fs-id1172099478632">
<term>conduction band</term>
<meaning id="fs-id1172101807559">above the valence band, the next available band in the energy structure of a crystal</meaning>
</definition>Referencing norms: illuminated_by
module/m58599#fs-id1172099375794 · defn · referenced by: 1
en · official · sha256:14f542fd299690ba34719ca3d283962f510a1a2b4a3d857805f9f7defe3d18c7
<definition id="fs-id1172099375794">
<term>energy band</term>
<meaning id="fs-id1172101926324">nearly continuous band of electronic energy levels in a solid</meaning>
</definition>Referencing norms: atoms_in_lattice
module/m58599#fs-id1172102132430 · defn · referenced by: 4
en · official · sha256:194f5334d5789a7e3b5ceb1f6070a77e9ad20a94c42e6a853ec27211cee423cf
<definition id="fs-id1172102132430">
<term>energy gap</term>
<meaning id="fs-id1172099626608">gap between energy bands in a solid</meaning>
</definition>Referencing norms: EnergyGapInJoules, PhotonAboveTheGapExcitesAnElectron, PhotonBelowTheGapExcitesNothing, energy_gap_in_electronvolts
module/m58599#fs-id1172101699328 · section · referenced by: 1
en · official · sha256:7ad3db37e73d923749829f20d8b6a5da772b0b27acccc8706539103a994a226d
<para id="fs-id1172101699328">For an insulator, the energy gap between the valence band and the conduction band is larger than for a semiconductor.</para>Referencing norms: WiderGapIsCompared
module/m58599#fs-id1172099897659 · defn
en · official · sha256:28f198bd1370821ac473631e52c0914120946fffbb38b4b0488c62608e40b964
<definition id="fs-id1172099897659">
<term>semiconductor</term>
<meaning id="fs-id1172102095353">solid with a relatively small energy gap between the lowest completely filled band and the next available unfilled band</meaning>
</definition>module/m58599#fs-id1172099756371 · defn
en · official · sha256:8de5a8c9ca9fa842377650db4f2d782d0a0deb274b29f0f657a7f010e2a25549
<definition id="fs-id1172099756371">
<term>valence band</term>
<meaning id="fs-id1172101928595">highest energy band that is filled in the energy structure of a crystal</meaning>
</definition>The hash beside the text is the sha256 of its exact bytes. It is the check that the text shown matches the one pinned in the package: a divergence fails the oracle’s static analysis.