https://doi.org/10.1140/epjb/e2004-00242-6
Calculation of tunnel splitting in a biaxial spin particle with an applied magnetic field
1
Department of Physics, Fudan University, Shanghai 200433, P.R. China
2
Department of Physics, The University of Hong Kong, Hong Kong, P.R. China
3
Department of Physics, Hubei University, Wuhan 430062, P.R. China
4
Institute of Theoretical Physics, Shanxi University, Taiyuan
030006, P.R. China
Corresponding author: a binzhoucn@yahoo.com
Received:
18
January
2004
Revised:
12
May
2004
Published online:
3
August
2004
The level splitting formulae of excited states as well as ground state for a biaxial spin particle in the presence of an applied magnetic field are obtained in a simple way from Schrödinger theory. Considering the boundary condition of the wave function, we obtain the tunneling splitting of the energy levels for half-integral spins as well as for the integral spins. The results obtained are compared with those previously derived by complicated pseudoparticle methods and numerical calculation values.
PACS: 75.45.+j – Macroscopic quantum phenomena in magnetic systems / 75.50.Xx – Molecular magnets / 73.40.Gk – Tunneling
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004
