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Abstract Using the diagram technique for Matsubara Green's functions it is shown that the dynamics of the localized spin subsystem in the s–d(f) model can be described in terms of… Click to show full abstract
Abstract Using the diagram technique for Matsubara Green's functions it is shown that the dynamics of the localized spin subsystem in the s–d(f) model can be described in terms of an effective spin model with multi-site spin–spin interactions. An exact representation of the action for the effective purely spin model is derived as an infinite series in powers of s–d(f) exchange interaction J . The indirect interactions of the 2nd, 3rd and 4th order are discussed.
Keywords:
multi site;
spin interactions;
model;
site spin;
spin;
spin spin
Journal Title: Journal of Magnetism and Magnetic Materials
Year Published: 2017
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Journal Title: Journal of Magnetism and Magnetic Materials
Year Published: 2017
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!