Magnetic phase diagram and magnetic pairing in doped La/sub 2/CuO/sub 4/

Journal Article · Mon Mar 28 04:00:00 EST 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.60.1330· OSTI ID:5369542

Aharony, A; Birgeneau, R J; Coniglio, A; Kastner, M A; Stanley, H E

We discuss the temperature-concentration phase diagram of doped La/sub 2/CuO/sub 4/. The addition of holes introduces a local ferromagnetic exchange coupling between Cu spins. The resulting frustration destroys the 3D Neel state characterizing pure La/sub 2/CuO/sub 4/, and generates a new 3D spin-glass phase. In the paramagnetic phase, strongly correlated Cu spins in the planes are canted by the holes, yielding an oscillating dipole-dipole attraction between holes. The possible relevance to superconductivity is discussed.

• Research Organization: Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts 02215; Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139; School of Physics and Astronomy, Beverly and Raymond Sackler Faculty of Exact Sciences, Tel Aviv University, Tel
• OSTI ID: 5369542
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 60:13; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
EXCHANGE INTERACTIONS
FERROMAGNETISM
INTERACTIONS
LANTHANUM COMPOUNDS
MAGNETISM
NEEL TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SPIN GLASS STATE
STRONTIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE