Large transverse field tunnel splittings in the Fe_8 spin Hamiltonian
Anupam Garg
TL;DR
This paper extends calculations of ground state tunnel splittings in Fe_8 molecular magnets with biaxial symmetry, clarifying the oscillation phenomena in the presence of a transverse magnetic field.
Contribution
It provides new extended calculations and a clearer interpretation of the oscillation of tunnel splittings in Fe_8 under transverse magnetic fields.
Findings
Extended calculations of tunnel splittings in Fe_8
Clarified the meaning of oscillations in tunnel splittings
Identified the role of transverse magnetic fields in splitting behavior
Abstract
The spin Hamiltonian that describes the molecular magnet Fe has biaxial symmetry with mutually perpendicular easy, medium, and hard magnetic axes. Previous calculations of the ground state tunnel splittings in the presence of a magnetic field along the hard axis are extended, and the meaning of the previously discovered oscillation of this splitting is further clarified.
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