Nuclear antiferromagnetism in a registeredsolid
- 15 May 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 62 (20), 2405-2408
- https://doi.org/10.1103/physrevlett.62.2405
Abstract
Recent heat-capacity measurements of adsorbed on graphite by Greywall and Busch are interpreted in terms of a triangular second-layer solid having √7 × √7 registry with respect to the first adsorbed layer. The observed entropy change in the millikelvin region is well accounted for by an antiferromagnetic Heisenberg spin Hamiltonian in which only a subset of second-layer spins forming a Kagomé net are strongly coupled.
Keywords
This publication has 15 references indexed in Scilit:
- Heat capacity ofadsorbed on graphite at millikelvin temperatures and near third-layer promotionPhysical Review Letters, 1989
- Experimental Observation of a Two-Dimensional Heisenberg Nuclear FerromagnetPhysical Review Letters, 1988
- Nuclear Ferromagnetism of Two-DimensionalPhysical Review Letters, 1986
- Exact ground states for a class of antiferromagnetic Heisenberg models with short-range interactionsJournal of Physics A: General Physics, 1982
- 3He on graphite: Second layer and nucleationPhysica B+C, 1981
- Neutron-diffraction study of the solid layers at the liquid-solid boundary infilms adsorbed on graphitePhysical Review B, 1981
- Exchange and magnetic order in HCP 3He and adsorbed 3He with triangular latticeJournal of Low Temperature Physics, 1980
- Heat-capacity study of the second layer ofadsorbed on GrafoilPhysical Review B, 1978
- Phases ofandMonolayer Films Adsorbed on Basal-Plane Oriented GraphitePhysical Review A, 1973
- Exchange in solid 3He and the Heisenberg HamiltonianProceedings of the Physical Society, 1965