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- W2091299566 abstract "Effects of magnetic impurities on a two-dimensional Hubbard antiferromagnet are treated self-consistently within a numerical Hartree–Fock approximation. Both kinds of impurities — those with spin equal to the host spin (S′=S); and those with spin different from the host spin (S′≠S) — have been studied. In this approach, S′=S impurities lead to momentum (Q) dependent renormalization of the long wavelength magnon energies, unlike in the previous perturbative calculations where the renormalization was found to be Q-independent. S′≠S impurities, however, give Q-dependent logarithmically diverging corrections. Both kinds of impurities leave the gapless Goldstone mode in the spin excitations unaffected." @default.
- W2091299566 created "2016-06-24" @default.
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- W2091299566 date "1999-10-30" @default.
- W2091299566 modified "2023-09-23" @default.
- W2091299566 title "SELF-CONSISTENT NUMERICAL STUDIES OF MAGNETIC IMPURITIES IN HUBBARD ANTIFERROMAGNET" @default.
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- W2091299566 doi "https://doi.org/10.1142/s0217979299002952" @default.
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