Spin correlations in a two-dimensional Heisenberg antiferromagnet doped with static holes

Journal Article · Wed Apr 01 04:00:00 EST 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.45.7570· OSTI ID:7110736

Manousakis, E ^[1]

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1. Department of Physics and Center for Materials Research and Technology, Florida State University, Tallahassee, Florida 32306 (United States)

We study the temperature dependence of the spin correlation length of the spin-1/2 Heisenberg antiferromagnet doped with static holes which are uniformly distributed in the square lattice. We have used Handscomb's quantum Monte Carlo method to study lattices of sizes up to 20{times}20 and the high-temperature series expansion. In the doping regime where the system is ordered at {ital T}=0, the correlation length can be fit at low temperature by the form {xi}({ital T})={ital c}({ital x})exp(2{pi}{rho}{sub {ital s}}({ital x})/{ital T}), where the dependence of the spin stiffness constant {rho}({ital x}) and of the prefactor {ital c}({ital x}) on doping {ital x} can be understood by simple scaling arguments. We discuss the implications of these results on the neutron-scattering data obtained on the lightly doped La{sub 2{minus}{ital x}}Sr{sub {ital x}}CuO{sub 4}.

• DOE Contract Number: FC05-85ER25000
• OSTI ID: 7110736
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 45:13; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
ANTIFERROMAGNETISM
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL MODELS
HEISENBERG MODEL
HIGH-TC SUPERCONDUCTORS
HOLES
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETISM
MATHEMATICAL MODELS
MONTE CARLO METHOD
ORIENTATION
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
SCALING LAWS
SPIN GLASS STATE
SPIN ORIENTATION
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUBSTOICHIOMETRY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS