Spin-correlations and low lying excited states of the spin-1/2 Heisenberg antiferromagnet on a square lattice

Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung

Abstract

The ground state and the lowest excited states of the spin 1/2-Heisenberg model are investigated by exact diagonalization and variational Monte Carlo techniques. Our trial state represents a generalization of a wave function introduced by Hulthen, Kasteleijn and Marshall. The long range character of the spin-correlation function is in excellent agreement with exact diagonalization and also with recent neutron scattering results for La2CuO4. The asymptotic behavior of the spin-correlation function is found to differ from spin-wave theory. From the exact (N
Originalspracheenglisch
Seiten (von - bis)181-193
Seitenumfang13
FachzeitschriftZeitschrift für Physik: B
Jahrgang72
Ausgabenummer2
DOIs
PublikationsstatusVeröffentlicht - 1988
Extern publiziertJa

Fingerprint

Untersuchen Sie die Forschungsthemen von „Spin-correlations and low lying excited states of the spin-1/2 Heisenberg antiferromagnet on a square lattice“. Zusammen bilden sie einen einzigartigen Fingerprint.

Dieses zitieren