Large transverse-field tunnel splittings in the Fe8 spin Hamiltonian

被引:29
作者
Garg, A [1 ]
机构
[1] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA
来源
PHYSICAL REVIEW B | 1999年 / 60卷 / 09期
基金
美国国家科学基金会;
关键词
D O I
10.1103/PhysRevB.60.6705
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The spin Hamiltonian that describes the molecular magnet Fee 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. [S0163-1829(99)00333-1]
引用
收藏
页码:6705 / 6709
页数:5
相关论文
共 14 条
[1]  
[Anonymous], 1980, Gos. Izd-vo Fiz.-Mat. Literatury
[2]   Superparamagnetic-like behavior in an octanuclear iron cluster [J].
Barra, AL ;
Debrunner, P ;
Gatteschi, D ;
Schulz, CE ;
Sessoli, R .
EUROPHYSICS LETTERS, 1996, 35 (02) :133-138
[3]   Neutron spectroscopy for the magnetic anisotropy of molecular clusters [J].
Caciuffo, R ;
Amoretti, G ;
Murani, A ;
Sessoli, R ;
Caneschi, A ;
Gatteschi, D .
PHYSICAL REVIEW LETTERS, 1998, 81 (21) :4744-4747
[4]  
CHUDNOVSKY EM, CONDMAT9902218
[5]   Macroscopic measurement of resonant magnetization tunneling in high-spin molecules [J].
Friedman, JR ;
Sarachik, MP ;
Tejada, J ;
Ziolo, R .
PHYSICAL REVIEW LETTERS, 1996, 76 (20) :3830-3833
[6]   Lattice distortion mediated paramagnetic relaxation in high-spin high-symmetry molecular magnets [J].
Garg, A .
PHYSICAL REVIEW LETTERS, 1998, 81 (07) :1513-1516
[7]   DISSIPATION AND INTERFERENCE EFFECTS IN MACROSCOPIC MAGNETIZATION TUNNELING AND COHERENCE [J].
GARG, A .
PHYSICAL REVIEW B, 1995, 51 (21) :15161-15169
[8]   TOPOLOGICALLY QUENCHED TUNNEL SPLITTING IN SPIN SYSTEMS WITHOUT KRAMERS DEGENERACY [J].
GARG, A .
EUROPHYSICS LETTERS, 1993, 22 (03) :205-210
[9]   SUPPRESSION OF TUNNELING BY INTERFERENCE IN HALF-INTEGER-SPIN PARTICLES [J].
LOSS, D ;
DIVINCENZO, DP ;
GRINSTEIN, G .
PHYSICAL REVIEW LETTERS, 1992, 69 (22) :3232-3235
[10]   Quantum tunneling of the magnetization in an iron cluster nanomagnet [J].
Sangregorio, C ;
Ohm, T ;
Paulsen, C ;
Sessoli, R ;
Gatteschi, D .
PHYSICAL REVIEW LETTERS, 1997, 78 (24) :4645-4648