Electronic structure of superconductors without apical oxygen

Sr2CuO2F2, Sr2CuO2Cl2, and Ca2CuO2Cl2

D. L. Novikov, Arthur J Freeman, J. D. Jorgensen

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

The electronic structures of Sr2CuO2F2, Sr2CuO2Cl2, and Ca2CuO2Cl2 are investigated by means of the full-potential linear muffin-tin orbital method. As in other high-Tc cuprates, the electronic structures of these compounds display strong two-dimensional features including a low density of states at EF and a simple Fermi surface of the form of a rounded square. A major van Hove saddle-point singularity exists near the Fermi level. We predict the optimum superconductivity properties in these materials to occur when doped by 0.35-0.38 holes per unit cell.

Original languageEnglish
Pages (from-to)6675-6679
Number of pages5
JournalPhysical Review B
Volume51
Issue number10
DOIs
Publication statusPublished - 1995

Fingerprint

Superconducting materials
Electronic structure
Oxygen
electronic structure
Fermi surface
Tin
oxygen
saddle points
Superconductivity
Fermi level
trucks
cuprates
Fermi surfaces
tin
superconductivity
orbitals
cells

ASJC Scopus subject areas

  • Condensed Matter Physics

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Electronic structure of superconductors without apical oxygen : Sr2CuO2F2, Sr2CuO2Cl2, and Ca2CuO2Cl2. / Novikov, D. L.; Freeman, Arthur J; Jorgensen, J. D.

In: Physical Review B, Vol. 51, No. 10, 1995, p. 6675-6679.

Research output: Contribution to journalArticle

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