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Presumption for a Quantum Energy Gap in the Quasi-One-Dimensional <i>S</i> = 1 Heisenberg Antiferromagnet Ni(C <sub>2</sub> H <sub>8</sub> N <sub>2</sub> ) <sub>2</sub> NO <sub>2</sub> (ClO <sub>4</sub> )
Europhysics Letters (EPL) · 1987 · Vol. 3(8) · pp. 945–952
J.P. Renard✉(Université Paris-Sud)M. Verdaguer(Centre National de la Recherche Scientifique)L. P. Régnault(CEA Grenoble)W. A. C. Erkelens(CEA Grenoble)J. Rossat‐Mignod(CEA Grenoble)W. G. Stirling(Institut Laue-Langevin)
Abstract
Magnetic susceptibility and inelastic neutron scattering experiments have been performed in the nearly ideal one-dimensional Heisenberg antiferromagnet with spin one, Ni(C2H8N2)2NO2ClO4. The experimental results are consistent with the recent theoretical predictions for a quantum energy gap between the ground state and the first excited states.
Physics of Superconductivity and MagnetismOrganic and Molecular Conductors ResearchAdvanced Condensed Matter PhysicsAntiferromagnetismPresumptionPhysicsCondensed matter physicsQuantumHeisenberg modelEnergy (signal processing)Quantum mechanicsLawPolitical science
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References
Continuum dynamics of the 1-D Heisenberg antiferromagnet: Identification with the O(3) nonlinear sigma model
Physics Letters A · 1983 · 2,831 citations
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