Theory of magnetic excitations in the Kondo lattice

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dc.creatorEder, R.
dc.date1998-08-24
dc.date.accessioned2026-07-07T03:11:22Z
dc.date.available2026-07-07T03:11:22Z
dc.descriptionWe present a theory for the spin excitations of the Kondo lattice. We derive an effective Hamiltonian, which describes Fermionic spin 1/2 charge fluctuations interacting with Bosonic triplet spin fluctuations. We show that already the simplest approximation possible, i.e. replacing the magnon self-energy by the free polarization bubble for the charge excitation Greens function, gives a quantitative description of the `spin gap' and `charge gap' as obtained in numerical calculations for the Kondo insulator.
dc.descriptionRevTex-file, 4 PRB pages with 4 embedded eps files. Hardcopies of figures (or the entire manuscript) can be obtained by e-mail request to: eder@physik.uni-wuerzburg.de
dc.identifierhttps://arxiv.org/abs/cond-mat/9808261
dc.identifierhttp://arxiv.org/abs/cond-mat/9808261
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28549
dc.subjectCondensed Matter
dc.titleTheory of magnetic excitations in the Kondo lattice
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