Magnetic energy-level diagrams of high-spin (Mn-acetate) and low-spin (V) molecules
arXiv:cond-mat/0306275 · doi:10.1002/pssb.200304391
Abstract
The magnetic energy-level diagrams for models of the Mn12 and V15 molecule are calculated using the Lanczos method with full orthogonalization and a Chebyshev-polynomial-based projector method. The effect of the Dzyaloshinskii-Moriya interaction on the appearance of energy-level repulsions and its relevance to the observation of steps in the time-dependent magnetization data is studied. We assess the usefulness of simplified models for the description of the zero-temperature magnetization dynamics.
References in corpus (16)
- Butterfly hysteresis loop and dissipative spin reversal in the S=1/2, V15 molecular complex
- Observation of the distribution of molecular spin states by resonant quantum tunneling of the magnetization
- Non-adiabatic Landau-Zener transitions in low spin molecular magnet V15
- Properties of low-lying states in some high-nuclearity Mn, Fe and V clusters: Exact studies of Heisenberg models
- Phonon-assisted tunneling in the quantum regime of Mn12-ac
- Many-Spin Interactions and Spin Excitations in Mn12
- Experimental evidence for Shekhtman-Entin-Wohlman-Aharony (SEA) interactions in Ba2CuGe2O7
- Exchange couplings in the magnetic molecular cluster Mn12Ac
- Magnetic Anisotropy in the Molecular Complex V15
- Quantum Tunneling in Half-Integer Spin Systems
- Spin dynamics of Mn12-acetate in the thermally-activated tunneling regime: ac-susceptibility and magnetization relaxation
- Spin dynamics and coherent tunnelling in the molecular magnetic rings Fe_6 and Fe_8
- Many-spin effects and tunneling splittings in Mn12 magnetic molecules
- Magnetization of Mn_12 Ac in a slowly varying magnetic field: an ab initio study
- An alternate model for magnetization plateaus in the molecular magnet V_15
- Many-Spin Effects and Tunneling Properties of Magnetic Molecules