Frustrated spin (J-J') systems do not model the magnetic properties of high-temperature superconductors

Journal Article · Tue Jan 01 04:00:00 EST 1991 · International Journal of Modern Physics B; (United States)

DOI:https://doi.org/10.1142/S0217979291000201· OSTI ID:6270134

Bacci, S; Gagliano, E ^[1]; Nori, F ^[2]

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1. Illinois Univ., Urbana, IL (United States). Dept. of Physics
2. Michigan Univ., Ann Arbor, MI (United States). Dept. of Physics

In this paper, the authors study the t - J model with one hole and the frustrated Heisenberg J - J{prime} model in a square lattice. Specifically, the authors compute and compare for both, the doped and frustrated models, the dynamic spin-spin structure factor S(q, {omega}), and the B{sub 1g} Raman scattering spectrum R ({omega}) at zero temperature. The behavior of these quantities differs between the t -J and the J - J{prime} models. The authors observe that both the B{sub 1g} Raman spectrum as well as the structure factor for the t - J model are in qualitative agreement with experimental measurements while the corresponding results for the J - J{prime} model are not. These results indicate that the magnetic behavior of doped systems cannot be accurately modeled by a purely spin Hamiltonian. These results are of relevance to the claim that the effect of adding holes (doping) on the magnetic properties of the quantum Heisenberg antiferromagnet can be described by introducing second and sometimes third nearest-neighbor couplings, J{prime} and J {double prime} respectively, in the original (undoped) Hamiltonian.

• OSTI ID: 6270134
• Journal Information: International Journal of Modern Physics B; (United States), Journal Name: International Journal of Modern Physics B; (United States) Vol. 5:1-2; ISSN 0217-9792; ISSN IJPBE
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
665411 -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
COUPLING
CRYSTAL MODELS
DOPED MATERIALS
HAMILTONIANS
HEISENBERG MODEL
HIGH-TC SUPERCONDUCTORS
HOLES
INTERMEDIATE COUPLING
J-J COUPLING
MAGNETIC PROPERTIES
MAGNETISM
MATERIALS
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
PHYSICAL PROPERTIES
QUANTUM OPERATORS
RAMAN SPECTRA
SPECTRA
SUPERCONDUCTORS