Random-phase approximation for multi-band Hubbard models
نویسندگان
چکیده
منابع مشابه
Random Phase Approximation for Multi-Band Hubbard Models
We derive the random-phase approximation for spin excitations in general multi-band Hubbard models, starting from a collinear ferromagnetic HartreeFock ground state. The results are compared with those of a recently introduced variational many-body approach to spin-waves in itinerant ferromagnets. As we exemplify for Hubbard models with one and two bands, the two approaches lead to qualitativel...
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ژورنال
عنوان ژورنال: Journal of Physics: Condensed Matter
سال: 2001
ISSN: 0953-8984,1361-648X
DOI: 10.1088/0953-8984/13/44/312