Destructive quantum interference in spin tunneling problems
- 30 November 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 69 (22) , 3236-3239
- https://doi.org/10.1103/physrevlett.69.3236
Abstract
In some spin tunneling problems there are several different but symmetry-related tunneling paths that connect the same initial and final configurations. The topological phase factors of the corresponding tunneling amplitudes can lead to destructive interference between the different paths, so that the total tunneling amplitude is zero. In the study of tunneling between different ground-state configurations of the Kagomé-lattice quantum Heisenberg antiferromagnet, this occurs when the spin s is half odd integer.Keywords
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This publication has 13 references indexed in Scilit:
- Continuum dynamics of the 1-D Heisenberg antiferromagnet: Identification with the O(3) nonlinear sigma modelPublished by Elsevier ,2002
- Macroscopic magnetization tunneling and coherence: Calculation of tunneling-rate prefactorsPhysical Review B, 1992
- Small-polaron theory of doped antiferromagnetsPhysical Review Letters, 1991
- The spin-½ Heisenberg antiferromagnet on a square lattice and its application to the cuprous oxidesReviews of Modern Physics, 1991
- Topological terms in one- and two-dimensional quantum Heisenberg antiferromagnetsPhysical Review B, 1988
- O(3) NonlinearModel and the Topological Distinction between Integer- and Half-Integer-Spin Antiferromagnets in Two DimensionsPhysical Review Letters, 1988
- Superconductivity in strongly correlated electronic systems and confinement versus deconfinement phenomenonPhysical Review Letters, 1988
- Quantum Tunneling of Magnetization in Small Ferromagnetic ParticlesPhysical Review Letters, 1988
- Mass generation by merons in quantum spin chains and the O(3)σmodelPhysical Review Letters, 1986
- ‘‘Θ physics’’ and quantum spin chains (abstract)Journal of Applied Physics, 1985