Theory for the density of states and antiferromagnetism in CuO2 planes of high-Tc superconductors

Weiyi Zhang; M. Avignon; K. H. Bennemann

doi:10.1103/PhysRevB.42.10192

← Back to search

Theory for the density of states and antiferromagnetism in CuO2 planes of high-Tc superconductors

Weiyi Zhang, M. Avignon, K. H. Bennemann

DOI 10.1103/PhysRevB.42.10192 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

Using an extension of the Gutzwiller approximation, we calculated the density of states, magnetic moment, and the antiferromagnetic ground-state energy of high-Tc copper oxides. The Hubbard Hamiltonian used for the calculations includes hopping between oxygen atoms as well as Cu-O hopping. It is shown that hopping between oxygen atoms is particularly significant for the magnetic properties. The effect of doping, on-site hole repulsion, and charge-transfer energy on the local density of states, magnetic moment of Cu, and antiferromagnetic ground-state energy is studied in detail.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2-xBaxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	90	Pressure not reported	unknown
Bi2Sr2CaCu2O8-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	110	Pressure not reported	unknown
Tl2Sr2CaCu2O8-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	125	Pressure not reported	unknown