[Formula presented]: A Frustrated Ferromagnet

Physical Review Letters

Volumn 89, Issue 4, 2002, Pages

  Zaránd, Gergely ^a,b,c   Jankó, Boldizsár ^a,d  

^a ARGONNE NATIONAL LABORATORY   (United States)

^b HARVARD UNIVERSITY   (United States)

^c BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS   (Hungary)

^d UNIVERSITY OF NOTRE DAME   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 85038327760     PISSN: 00319007     EISSN: 10797114     Source Type: Journal    
DOI: 10.1103/PhysRevLett.89.047201     Document Type: Article

References (30)

1. J. K. Furdyna, J. Appl. Phys. 64, R29 (1988).
2. H. Ohno, Science 281, 951 (1998).
3. K. Binder and A. P. Young, Rev. Mod. Phys. 58, 801 (1986).
4. J. Snyder, Nature (London) 413, 48 (2001).
5. J. S. Blakemore, J. Appl. Phys. 53, R123 (1982).
6. W. Kohn and J. M. Luttinger, Phys. Rev. 98, 915 (1955).
7. M. Linnarson, Phys. Rev. B 55, 6938 (1997);
8. J. Szczytko, Phys. Rev. B 60, 8304 (1999);
9. J. Okabayashi, Phys. Rev. B 58, R4211 (1998).
10. P. Kacman, Semicond. Sci. and Technol. 16, R25 (2001).
11. See D. L. Cox and A. Zawadowski, Adv. Phys. 47, 599 (1998).
12. R. N. Bhatt and X. Wan, Int. J. Mod. Phys. C 10, 1459 (1999);
13. Mona Berciu and R. N. Bhatt, Phys. Rev. Lett. 87, 107203 (2001).
14. J. König, H. H. Lin, and A. H. MacDonald, Phys. Rev. Lett. 84, 5628 (2000).
15. For recent reviews see J. König, in Electronic Structure and Magnetism of Complex Materials, D. J. Singh and D. A. Papaconstantopoulos (Springer-Verlag, Berlin,2002);
16. T. Dietl, cond-mat/0201282.
17. Monte Carlo simulations taking both band structure effects and disorder into account have been performed on relatively small system sizes in a different regime by J. Schliemann, Phys. Rev. B 64, 165201 (2001).
18. K. Yosida, Theory of Magnetism (Springer-Verlag, Berlin,1996).
19. A. Baldereschi and N. O. Lipari, Phys. Rev. B 8, 2697 (1973).
20. G. Zarand and B. Janko (unpublished).
21. T. Dietl, Science 287, 1019 (2000).
22. We neglected the effect of global anisotropy energy terms, which determine the actual orientation of the macroscopic magnetization in the symmetry broken phase. They are about (Formula presented) of the average exchange interaction energy between neighboring spins, and therefore do not influence the microscopic structure discussed here.
23. H. Ohno, Phys. Rev. Lett. 68, 2664 (1992).
24. A. VanEsch, Phys. Rev. B 56, 13 103 (1997).
25. S. J. Potashnik, Appl. Phys. Lett. 19, 1495 (2001).
26. A very weak noncollinearity has been inferred recently even from the spin-wave spectrum of a model with no spin-orbit interaction by J. Schliemann and A. H. MacDonald, Phys. Rev. Lett. 88, 137201 (2002).
27. H. Ohno and F. Matsukura, Solid State Commun. 117, 179 (2001).
28. J. K. Furdyna (unpublished).
29. P. Majumdar and P. B. Littlewood, Nature (London) 395, 479 (1998). This work also suggested spin polaronic contributions as the explanation of the resistance maximum. However, this scenario predicts a maximum above (Formula presented) (in contrast to the observed maximum at (Formula presented)).
30. Also, according to M. J. Calderon, L. Brey, and P. B. Littlewood, Phys. Rev. B 62, 3368 (2000), the temperature range where these polaronic excitations exist in (Formula presented) is probably rather limited.