Superexchange Coupling and Spin Susceptibility Spectral Weight in Undoped Monolayer Cuprates

Journal Article · Mon Dec 01 00:00:00 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]

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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, Vol. 79, Issue 24; Other Information: PBD: Dec 1997
• Country of Publication: United States
• Language: English

Related Subjects

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