On the energetics of transversal and longitudinal fluctuations of atomic magnetic moments |
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| Authors: | F. Dietermann,L.M. Sandratskii,M. Fä hnle |
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| Affiliation: | 1. Max-Planck-Institute for Intelligent Systems (formerly Max-Planck Institute for Metals Research), Heisenbergstr. 3, D-70569 Stuttgart, Germany;2. Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany |
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| Abstract: | By constrained spin-density functional calculations we estimate the relative role of the longitudinal and transversal fluctuations of the magnetic moments in the series of 3d metals (bcc Fe, hcp and fcc Co, and fcc Ni) for weak excitations from the ferromagnetic ground state. It is shown that the importance of longitudinal fluctuations strongly varies from relatively small in bcc Fe to large in fcc Ni. This means that a consistent adiabatic treatment of the low-energy spin fluctuations should include independent longitudinal fluctuations. |
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| Keywords: | Spin fluctuation Longitudinal and transversal Adiabatic approximation |
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