Abstract
A tetrahedral magnetic cluster surrounded by metallic atoms is studied in the framework of the Hubbard model. The ground-state energy and the wave function are obtained exactly using the Lanczos numerical diagonalization method. The spin/spin correlation functions γij = 〈S→i · S→jj〉 and the total spin S are analyzed as a function of the ratio between the on-site Coulomb repulsion U and electronic hopping t.
Original language | English (US) |
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Pages (from-to) | 3428-3430 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 41 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2005 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering