Density functional studies of single molecule magnets

被引:81
作者
Kortus, J
Pederson, MR
Baruah, T
Bernstein, N
Hellberg, CS
机构
[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
[2] USN, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA
[3] Georgetown Univ, Dept Phys, Washington, DC 20057 USA
关键词
nanomagnets; single-molecule magnets; magnetic anisotropy; density-functional calculations; spin-orbit coupling;
D O I
10.1016/S0277-5387(03)00160-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A method for the calculation of the second-order anisotropy parameters of single molecular magnets from the single particle orbitals is reviewed. We combine this method with density functional calculations to predict the magnetic anisotropy parameters of several single molecule magnets: Mn-12-acetate, Mn-10, CO4, Fe-4, Cr, and V-15. Comparison with available experimental data shows that it is possible to predict these values quite accurately from density functional wavefunctions. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1871 / 1876
页数:6
相关论文
共 36 条
[11]   SELF-CONSISTENT EQUATIONS INCLUDING EXCHANGE AND CORRELATION EFFECTS [J].
KOHN, W ;
SHAM, LJ .
PHYSICAL REVIEW, 1965, 140 (4A) :1133-&
[12]   Magnetic ordering, electronic structure, and magnetic anisotropy energy in the high-spin Mn10 single molecule magnet -: art. no. 092403 [J].
Kortus, J ;
Baruah, T ;
Bernstein, N ;
Pederson, MR .
PHYSICAL REVIEW B, 2002, 66 (09) :1-4
[13]   DFT studies of the molecular nanomagnet Fe8 and the V15 spin system -: Electronic structure and magnetic ordering [J].
Kortus, J ;
Pederson, MR ;
Hellberg, CS ;
Khanna, SN .
EUROPEAN PHYSICAL JOURNAL D, 2001, 16 (1-3) :177-180
[14]   Hamiltonian of the V15 spin system from first-principles density-functional calculations [J].
Kortus, J ;
Hellberg, CS ;
Pederson, MR .
PHYSICAL REVIEW LETTERS, 2001, 86 (15) :3400-3403
[15]  
KORTUS J, IN PRESS
[16]   Quantum computing in molecular magnets [J].
Leuenberger, MN ;
Loss, D .
NATURE, 2001, 410 (6830) :789-793
[17]   Distribution of tunnel splittings in Mn12 acetate [J].
Mertes, K.M. ;
Suzuki, Y. ;
Sarachik, M.P. ;
Paltiel, Y. ;
Shtrikman, H. ;
Zeldov, E. ;
Rumberger, E. ;
Hendrickson, D.N. ;
Christou, G. .
Physical Review Letters, 2001, 87 (22) :1-227205
[18]   Unsolved mysteries in molecule-based magnets - a personal view [J].
Miller, JS .
POLYHEDRON, 2001, 20 (11-14) :1723-1725
[19]   VARIATIONAL MESH FOR QUANTUM-MECHANICAL SIMULATIONS [J].
PEDERSON, MR ;
JACKSON, KA .
PHYSICAL REVIEW B, 1990, 41 (11) :7453-7461
[20]   Magnetic anisotropy barrier for spin tunneling in Mn12O12 molecules [J].
Pederson, MR ;
Khanna, SN .
PHYSICAL REVIEW B, 1999, 60 (13) :9566-9572