Symmetry and energy spectrum of high-nuclearity spin clusters

被引:104
作者
Waldmann, O [1 ]
机构
[1] Univ Erlangen Nurnberg, Inst Phys 3, D-91058 Erlangen, Germany
关键词
D O I
10.1103/PhysRevB.61.6138
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A general and efficient procedure is presented, which allows us to reduce the computational efforts for the calculation of the energy levels of high-nuclearity spin clusters. The method consists of block factorizing the Hamiltonian matrix using the invariance of the spin Hamiltonian with regard to interchanges of spin sites. It can be applied to any arbitrary spin Hamiltonian. In order to demonstrate the flexibility in handling different spin Hamiltonian terms and symmetry groups, its application to several model clusters is discussed.
引用
收藏
页码:6138 / 6144
页数:7
相关论文
共 34 条
[1]   MACROSCOPIC QUANTUM EFFECTS IN NANOMETER-SCALE MAGNETS [J].
AWSCHALOM, DD ;
DIVINCENZO, DP ;
SMYTH, JF .
SCIENCE, 1992, 258 (5081) :414-421
[2]   COMPLEX DYNAMICS OF MESOSCOPIC MAGNETS [J].
AWSCHALOM, DD ;
DIVINCENZO, DP .
PHYSICS TODAY, 1995, 48 (04) :43-48
[3]  
BARWINKEL K, IN PRESS J MAGN MAGN
[4]   A new manganese cluster topology capable of yielding high-spin species: mixed-valence [Mn-7(OH)(3)Cl-3(hmp)(9)](2+) with S>=10 [J].
Bolcar, MA ;
Aubin, SMJ ;
Folting, K ;
Hendrickson, DN ;
Christou, G .
CHEMICAL COMMUNICATIONS, 1997, (16) :1485-1486
[5]  
BONNER JC, 1964, PHYS REV A, V135, P640
[6]   Synthesis, crystal structure, magnetism, and magnetic anisotropy of cyclic clusters comprising six iron(III) ions and entrapping alkaline ions [J].
Caneschi, A ;
Cornia, A ;
Fabretti, AC ;
Foner, S ;
Gatteschi, D ;
Grandi, R ;
Schenetti, L .
CHEMISTRY-A EUROPEAN JOURNAL, 1996, 2 (11) :1379-1387
[7]   Quantum tunneling of the magnetic moment in manganese and iron molecular clusters [J].
Caneschi, A ;
Ohm, T ;
Paulsen, C ;
Rovai, D ;
Sangregorio, C ;
Sessoli, R .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 177 :1330-1336
[8]   TIME DEPENDENCE OF SPIN OPERATORS IN FINITE HEISENBERG LINEAR CHAINS [J].
CARBONI, F ;
RICHARDS, PM .
PHYSICAL REVIEW, 1969, 177 (02) :889-&
[9]   MAGNETIC-PROPERTIES OF AN OCTANUCLEAR IRON(III) CATION [J].
DELFS, C ;
GATTESCHI, D ;
PARDI, L ;
SESSOLI, R ;
WIEGHARDT, K ;
HANKE, D .
INORGANIC CHEMISTRY, 1993, 32 (14) :3099-3103
[10]  
Earnshaw A., 1968, INTRO MAGNETOCHEMIST