The 'magic' electronic state of high-T-c cuprate superconductors

TitleThe 'magic' electronic state of high-T-c cuprate superconductors
Publication TypeJournal Article
Year of Publication2008
AuthorsFijalkowski K, Grochala W
JournalDalton Transactions
Date PublishedOct 28
ISBN Number1477-9226
Accession Number
Keywordscacuo2, high-temperature superconductors, hydrides, parent

The available experimental data for 105 distinct families of high-T-c oxocuprate superconductors point to the presence of a 'magic' intrasheet Cu-O separation of 1.923 angstrom. which yields the highest T-c values at ambient pressure (Rao 1995). The interpretation with Burdett's model (1993), along with electronic band structure calculations is centered at a crossing of the O- and Cu-predominated sigma bands and points to the significance of the electron-phonon coupling for these materials.