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Volumn 68, Issue 23, 2003, Pages

Ferromagnetism in a dilute magnetic semiconductor: Generalized RKKY interaction and spin-wave excitations

Author keywords

[No Author keywords available]

Indexed keywords

FERROMAGNETIC MATERIAL;

EID: 0442295129     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.68.235208     Document Type: Article
Times cited : (30)

References (54)
  • 22
  • 29
    • 85039017501 scopus 로고    scopus 로고
    • cond-mat/0209055 (unpublished)
    • C. Timm F. von Oppen cond-mat/0209055 (unpublished).
    • Timm, C.1    von Oppen, F.2
  • 46
    • 0000008466 scopus 로고
    • For a stability analysis of the hole and electron doped antiferromagnetic state
    • For a stability analysis of the hole and electron doped antiferromagnetic state, see A. Singh and Z. Tešanović, Phys. Rev. B 41, 614 (1990);
    • (1990) Phys. Rev. B , vol.41 , pp. 614
    • Singh, A.1    Tešanović, Z.2
  • 48
    • 3342887504 scopus 로고
    • In contrast, the AF state of the Hubbard model (with nearest neighor hopping) is unstable to longitudinal fluctuations upon hole doping, leading to formation of spin bags, and stripes
    • In contrast, the AF state of the Hubbard model (with nearest neighor hopping) is unstable to longitudinal fluctuations upon hole doping, leading to formation of spin bags [J. R. Schrieffer, X.-G. Wen, and S.-C. Zhang, Phys. Rev. Lett. 60, 944 (1988)] and stripes
    • (1988) Phys. Rev. Lett. , vol.60 , pp. 944
    • Schrieffer, J.R.1    Wen, X.-G.2    Zhang, S.-C.3
  • 49
    • 0001662278 scopus 로고
    • It is the degeneracy at the nested Fermi surface which significantly enhances the susceptibility to longitudinal fluctuations, as evidenced by the stabilization of the homogeneous antiferromagnetic state when this degeneracy is lifted, e.g., by a small next-nearest-neighbour hopping term (Ref. 40)
    • [D. Poilblanc and T. M. Rice, Phys. Rev. B 39, 9749 (1989).] It is the degeneracy at the nested Fermi surface which significantly enhances the susceptibility to longitudinal fluctuations, as evidenced by the stabilization of the homogeneous antiferromagnetic state when this degeneracy is lifted, e.g., by a small next-nearest-neighbour hopping term (Ref. 40).
    • (1989) Phys. Rev. B , vol.39 , pp. 9749
    • Poilblanc, D.1    Rice, T.M.2
  • 50
    • 85038981887 scopus 로고    scopus 로고
    • cond-mat/0307009 (unpublished)
    • A. Singh, cond-mat/0307009 (unpublished).
    • Singh, A.1
  • 51
    • 85038987033 scopus 로고    scopus 로고
    • cond-mat/9802047 (unpublished)
    • A. Singh, cond-mat/9802047 (unpublished);
    • Singh, A.1
  • 52
    • 0041851136 scopus 로고    scopus 로고
    • references therein
    • A. Singh Eur. Phys. J. B 11, 5 (1999), and references therein.
    • (1999) Eur. Phys. J. B , vol.11 , pp. 5
    • Singh, A.1
  • 53


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