Superexchange Coupling and Spin Susceptibility Spectral Weight in Undoped Monolayer Cuprates

Journal Article · Mon Dec 01 04:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.4906· OSTI ID:554399

Bourges, P; Casalta, H; Petitgrand, D ^[1]; Casalta, H; Ivanov, A S ^[2]; Ivanov, A S ^[3]

---

1. Laboratoire Leon Brillouin, CEA-CNRS, CE Saclay, 91191 Gif sur Yvette (France)
2. Institut Laue-Langevin, 156X, 38042 Grenoble Cedex 9 (France)
3. Kurchatov Institute of Atomic Energy, 123182 Moscow (Russia)

A systematic inelastic neutron scattering study of the superexchange interaction in three different undoped monolayer cuprates (La{sub 2}CuO {sub 4} , Nd{sub 2}CuO {sub 4} , and Pr{sub 2}CuO {sub 4} ) has been performed using conventional triple axis technique. We deduce the in-plane antiferromagnetic (AF) superexchange coupling J which actually presents no simple relation versus crystallographic parameters. The absolute spectral weight of the spin susceptibility has been obtained and it is found to be smaller than expected even when quantum corrections of the AF ground state are taken into account. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 554399
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 24 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
ANTIFERROMAGNETISM
CUPRATES
EXCHANGE INTERACTIONS
INELASTIC SCATTERING
LANTHANUM OXIDES
MAGNETIC SUSCEPTIBILITY
NEODYMIUM OXIDES
NEUTRON DIFFRACTION
PRASEODYMIUM OXIDES