Geometry, electronic structure, and magnetism of clusters

作者: Houqian Sun , Yun Ren , You-Hua Luo , Guanghou Wang

DOI: 10.1016/S0921-4526(00)00526-3

关键词: Magnetic momentCluster (physics)MagnetismTight bindingElectronic densityPhysicsCharge densityHamiltonian (quantum mechanics)GeometryElectronic structure

摘要: Abstract Using an empirical many-body potential and Genetic Algorithm, the geometry of Rh n ( n=9, 13, 15, 17, 19 ) clusters has been optimized. Based on optimization geometry, ground-state magnetic properties related electronic rhodium are calculated by using a spd-band model Hamiltonian in unrestricted Hartree–Fock approximation. Results given for average moment per atom μ , spin-polarized charge distribution within cluster, sp d density state. The good agreement with experiments.

参考文章(20)
V. L. Moruzzi, A. R. Williams, James F. Janak, Calculated electronic properties of metals ,(1978)
A. J. Cox, J. G. Louderback, S. E. Apsel, L. A. Bloomfield, Magnetism in 4d-transition metal clusters. Physical Review B. ,vol. 49, pp. 12295- 12298 ,(1994) , 10.1103/PHYSREVB.49.12295
Michael D. Morse, Clusters of transition-metal atoms Chemical Reviews. ,vol. 86, pp. 1049- 1109 ,(1986) , 10.1021/CR00076A005
Fabrizio Cleri, Vittorio Rosato, Tight-binding potentials for transition metals and alloys. Physical Review B. ,vol. 48, pp. 22- 33 ,(1993) , 10.1103/PHYSREVB.48.22
P. Villaseñor-González, J. Dorantes-Dávila, H. Dreyssé, G. M. Pastor, Size and structural dependence of the magnetic properties of rhodium clusters Physical Review B. ,vol. 55, pp. 15084- 15091 ,(1997) , 10.1103/PHYSREVB.55.15084
A. J. Cox, J. G. Louderback, L. A. Bloomfield, Experimental observation of magnetism in rhodium clusters. Physical Review Letters. ,vol. 71, pp. 923- 926 ,(1993) , 10.1103/PHYSREVLETT.71.923
Yang Jinlong, F. Toigo, Wang Kelin, Structural, electronic, and magnetic properties of small rhodium clusters Physical Review B. ,vol. 50, pp. 7915- 7924 ,(1994) , 10.1103/PHYSREVB.50.7915
Saroj K. Nayak, S. E. Weber, P. Jena, K. Wildberger, R. Zeller, P. H. Dederichs, V. S. Stepanyuk, W. Hergert, RELATIONSHIP BETWEEN MAGNETISM, TOPOLOGY, AND REACTIVITY OF RH CLUSTERS Physical Review B. ,vol. 56, pp. 8849- 8854 ,(1997) , 10.1103/PHYSREVB.56.8849