Electronic properties of high-/ital T//sub /ital c// superconductors

Journal Article · Mon May 29 04:00:00 EDT 1989 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.62.2624· OSTI ID:6035570

Balseiro, C A; Avignon, M; Rojo, A G; Alascio, B

We study a generalized Hubbard Hamiltonian which includes the Cu and O orbitals in the CuO/sub 2/ planes of high-/ital T//sub /ital c// superconductors. We use slave-boson technique to account for the intra- and interatomic correlations. In the saddle-point approximation we obtain the metal-insulator phase diagram and conclude that, for one hole per unit cell in the CuO/sub 2/ plane, La/sub 2/CuO/sub 4/ is a charge-transfer insulator. Our results show that doping produces a rapid metallization of the system and destroys antiferromagnetic order. Transport properties and mechanism for superconductivity are briefly discussed.

• Research Organization: Laboratoire d'Etudes des Proprietes Electroniques des Solides, Centre National de le Recherche Scientifique, BP 166, 38042 Grenoble CEDEX, France(FR); Centro Atomico Bariloche, 8400 Bariloche, R.N., Argentina
• OSTI ID: 6035570
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 62:22; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
D STATES
DISTANCE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY LEVELS
HAMILTONIANS
INTERATOMIC DISTANCES
LANTHANUM ALLOYS
MATHEMATICAL OPERATORS
OXIDES
OXYGEN COMPOUNDS
P STATES
PHYSICAL PROPERTIES
QUANTUM OPERATORS
RARE EARTH ALLOYS
SADDLE-POINT METHOD
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS