Phase diagram and magnetic collective excitations of the Hubbard model for graphene sheets and layers

Physical Review B - Condensed Matter and Materials Physics

Volumn 70, Issue 19, 2004, Pages 1-12

  Peres, N M R ^a   Araujo M A N ^a,b   Bozi, Daniel ^a  

^a UNIVERSITY OF MINHO   (Portugal)

^b UNIVERSITY OF ÉVORA   (Portugal)

Author keywords

[No Author keywords available]

Indexed keywords

FERROMAGNETIC MATERIAL;

ABSORPTIOMETRY; ARTICLE; CRYSTAL STRUCTURE; EXCITATION; FIELD EMISSION; MAGNETIC FIELD; MAGNETISM; MATHEMATICAL ANALYSIS; MOLECULAR DYNAMICS; MOLECULAR INTERACTION; MOLECULAR MODEL; PHASE TRANSITION; POLARIZATION; RANDOMIZATION; SPATIAL DISCRIMINATION;

EID: 12344309972     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.70.195122     Document Type: Article

References (27)

1. P. W. Anderson, Science 235, 1196 (1987).
2. L. Balents, M. P. A. Fisher, and S. M. Girvin, Phys. Rev. B 65, 224412 (2002).
3. K. Takada, H. Dakurai, E. Takayama-Muromachi, F. Izumi, R. A. Dilinian, and T. Sasaki, Nature (London) 422, 53 (2003).
4. K. Kuroki and R. Arita, Phys. Rev. B 63, 174507 (2001).
5. S. Onari, K. Kuroki, R. Arita, and H. Aoki, Phys. Rev. B 65, 184525 (2002).
6. See Tôru Moriya, Acta Phys. Pol. B 34, 287 (2003); cond-mat/ 0207669 for a recent review on spin fluctuations and superconductivity.
7. J. Nagamatsu, N. Nakagawa, T. Muranaka, Y. Zenitani, and J. Akimitsu, Nature (London) 410, 63 (2001).
8. J. Gonzalez, F. Guinea, and M. A. H. Vozmediano, Nucl. Phys. B 424, 595 (1994); J. Gonzalez, F. Guinea, and M. A. H. Vozmediano, Phys. Rev. Lett. 77, 3589 (1996).
9. J. Gonzalez, F. Guinea, and M. A. H. Vozmediano, Nucl. Phys. B 424, 595 (1994); J. Gonzalez, F. Guinea, and M. A. H. Vozmediano, Phys. Rev. Lett. 77, 3589 (1996).
10. S. Sorella and E. Tosatti, Europhys. Lett. 19, 699 (1992).
11. L. M. Martelo, M. Dzierzawa, L. Siffert, and D. Baeriswyl, Z. Phys. B: Condens. Matter 103, 335 (1997).
12. N. Furakawa, J. Phys. Soc. Jpn. 70, 1483 (2001).
13. T. Hanisch, B. Kleine, A. Ritzl, and E. Müller-Hartmann, Ann. Phys. (N.Y.) 4, 303 (1995).
14. A. L. Tchougreeff and R. Hoffmann, J. Phys. Chem. 96, 8933 (1992).
15. G. Baskaran and S. A. Jafari, Phys. Rev. Lett. 89, 016402 (2002).
16. N. M. R. Peres, M. A. N. Arajo, and A. H. C. Neto, Phys. Rev. Lett. 92, 199701 (2004); G. Baskaran, and S. A. Jafari, ibid. 92, 199702 (2004).
17. N. M. R. Peres, M. A. N. Arajo, and A. H. C. Neto, Phys. Rev. Lett. 92, 199701 (2004); G. Baskaran, and S. A. Jafari, ibid. 92, 199702 (2004).
18. N. M. R. Peres and M. A. N. Araújo, Phys. Rev. B 65, 132404 (2002).
19. N. M. R. Peres and M. A. N. Araújo, Phys. Status Solidi 236, 523 (2003).
20. H. R. Krishnamurthy, C. Jayaprakash, S. Sarker, and W. Wenzel, Phys. Rev. Lett. 64, 950 (1990).
21. A. P. Kampf, Phys. Rev. B 53, 747 (1996).
22. More general spin states, as those discussed by Subir Sachdev in Rev. Mod. Phys. 75, 913 (2003), are outside the scope of our treatment. However, the states we consider in this paper are included in the analysis of the earlier reference.
23. J. Burgy, M. Mayr, V. Martin-Mayor, A. Moreo, and E. Dagotto, Phys. Rev. Lett. 87, 277202 (2001).
24. A. Singh and Z. Tesanovic, Phys. Rev. B 41, 11 457 (1990); 41, 11 604 (1990); 45, 7258 (1992).
25. A. Singh and Z. Tesanovic, Phys. Rev. B 41, 11 457 (1990); 41, 11 604 (1990); 45, 7258 (1992).
26. A. Singh and Z. Tesanovic, Phys. Rev. B 41, 11 457 (1990); 41, 11 604 (1990); 45, 7258 (1992).
27. The calculations presented in this figure were performed at the GCEP cluster, in the Center of Physics of the University of Minho.