Stabilization of magnetic polarons in antiferromagnetic semiconductors by extended spin distortions

European Physical Journal B

Volumn 39, Issue 4, 2004, Pages 447-451

  Castro, J ^a   Gonzalez I ^a   Baldomir, D ^a  

^a UNIVERSITY OF SANTIAGO DE COMPOSTELA   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

ANTIFERROMAGNETIC MATERIALS; BINDING ENERGY; CHARGE CARRIERS; HAMILTONIANS; LATTICE CONSTANTS; MAGNETIC ANISOTROPY; NUCLEAR MAGNETIC RESONANCE; PARAMETER ESTIMATION; PHASE TRANSITIONS; PROBLEM SOLVING; SEMICONDUCTOR DOPING;

MAGNETIC ENERGY; MAGNETIC POLARONS; SPIN CHAIN MODELS; SPIN DISTORTIONS;

MAGNETIC SEMICONDUCTORS;

EID: 4344608053     PISSN: 14346028     EISSN: None     Source Type: Journal    
DOI: 10.1140/epjb/e2004-00216-8     Document Type: Article

References (19)

1. E.L. Nagaev, JETP Lett. 6, 18 (1967)
2. E.L. Nagaev, Physics of magnetic semiconductors, 1st edn. (Mir, Moscow. 1983)
3. E.L. Nagaev, Colossal magnetoresistance and phase separation in magnetic semiconductors, 1st edn. (Imperial College Press, London. 2002)
4. E. Dagotto, Nanoscale phase separation and colossal magnetoresistance: the physics of manganites and related compounds, 1st edn. (Springer-Verlag, Berlin, 2003)
5. W.F. Brinkman, T.M. Rice, Phys. Rev. B 2, 1324 (1970)
6. Yu.A. Izyumov, Phys. Usp. 40, 445 (1997)
7. E.L. Nagaev, Phys. Rep. 346, 387 (2001)
8. E. Dagotto, T. Hotta, A. Moreo, Phys. Rep. 344, 1 (2001)
9. M. Hennion et al., Phys. Rev. Lett. 81, 1957 (1998)
10. G. Allodi et al., Phys. Rev. B 56, 6036 (1997)
11. P.G. De Gennes, Phys. Rev. 118, 13 (1960)
12. E.L. Nagaev, JETP Lett. 74, 431 (2001)
13. L. Néel, Ann. Phys. 2, 61 (1967)
14. A. Aharoni, Phys. Rev. B 47, 8296 (1993)
15. G. Biotteau et al., Phys. Rev. B 64, 104421 (2001)
16. A.O. Sboychakov, A.L. Rakhmanov, K.I. Kugel (private communication)
17. An exact solution for the full electronic Hamiltonian is avaliable, but we prefer to use this approximation, by proposes of clarity. The exact solution can not be used in the analytical approach we made here
18. Note that this is a two site problem, and therefore no additional phases are needed
19. As t does not enter in the equation to determine the magnetic structure (3), its numerical value is set to zero. Here it is shown only for completeness. Also for the double exchange case, one has to change L by t/2, and conversely