Numerical study of excited states in the Shastry-Sutherland model

Journal of the Physical Society of Japan

Volumn 72, Issue 1, 2003, Pages 160-169

  Munehisa, Tomo ^a   Munehisa, Yasuko ^a  

^a UNIVERSITY OF YAMANASHI   (Japan)

Author keywords

Dispersion; Excited states; Helical order; Shastry sutherland model; Variational method

Indexed keywords

DIMER;

ARTICLE; CALCULATION; ENERGY; EVALUATION; MATHEMATICAL ANALYSIS; MODEL; QUANTUM MECHANICS; RELIABILITY; ROTATION; SHASTRY SUTHERLAND MODEL; VELOCITY;

EID: 0037214826     PISSN: 00319015     EISSN: None     Source Type: Journal    
DOI: 10.1143/JPSJ.72.160     Document Type: Article

References (34)

1. B. S. Shastry and B. Sutherland: Physica B 108 (1981) 1069.
2. H. Kageyama, K. Yoshimura, R. Stern, N. V. Mushnikov, K. Onizuka, M. Kato, K. Kosuge, C. P. Slichter, T. Goto and Y. Ueda: Phys. Rev. Lett. 82 (1999) 3168.
3. K. Onizuka, H. Kageyama, Y. Narumi, K. Kindo, Y. Ueda and T. Goto: J. Phys. Soc. Jpn. 69 (2000) 1016.
4. H. Kageyama, M. Nishi, N. Aso, K. Onizuka, T. Yoshihama, K. Nukui, K. Kodama, K. Kakurai and Y. Ueda: Phys. Rev. Lett. 84 (2000) 5876.
5. M. Hofmann, H. Kierspel, T. Lorenz, G. S. Uhrig, O. Zabara, A. Freimuth, H. Kageyama and Y. Ueda: Phys. Rev. Lett. 87 (2001) 047202.
6. M. Hofmann, T. Lorenz, A. Freimuth, G. S. Uhrig, H. Kageyama, Y. Ueda, G. Dhalenne and A. Revcolevschi: Physica B/C 312-313 (2002) 597.
7. S. Zherlitsyn, S. Schmidt, B. Wolf, H. Schwenk, B. Lüthi, H. Kageyama, K. Onizuka, Y. Ueda and K. Ueda: Phys. Rev. B 62 (2000) 6097.
8. S. Miyahara and K. Ueda: Phys. Rev. Lett. 82 (1999) 3701.
9. E. Müller-Hartman, R. R. P. Singh, C. Knetter and G. S. Uhrig: Phys. Rev. Lett. 84 (2000) 1808.
10. Z. Weihong, C. J. Hamer and J. Oitmaa: Phys. Rev. B 60 (1999) 6608.
11. T. Momoi and K. Totsuka: Phys. Rev. B 61 (2000) 3231; ibid. 62 (2000) 15067.
12. T. Momoi and K. Totsuka: Phys. Rev. B 61 (2000) 3231; ibid. 62 (2000) 15067.
13. K. Totsuka, S. Miyahara and K. Ueda: Phys. Rev. Lett. 86 (2001) 520.
14. Y. Fukumoto: J. Phys. Soc. Jpn. 69 (2000) 2755.
15. C. Knetter, A. Bühler, E. Müller-Hartman and G. S. Uhrig: Phys. Rev. Lett. 85 (2000) 3958.
16. P. Lemmens, M. Grove, M. Fischer, G. Güntherodt, V. N. Kotov, H. Kageyama, K. Onizuka and Y. Ueda: Phys. Rev. Lett. 85 (2000) 2605.
17. T. Rõõm, U. Nagel, E. Lippmaa, H. Kageyama, K. Onizuka and Y. Ueda: Phys. Rev. B 61 (2000) 14342.
18. H. Nojiri, H. Kageyama, K. Onizuka, Y. Ueda and M. Motokawa: J. Phys. Soc. Jpn. 68 (1999) 2906.
19. K. Kodama, J. Yamazaki, M. Takigawa, H. Kageyama, K. Onizuka and Y. Ueda: cond-mat/0203426.
20. T. Munehisa and Y. Munehisa: J. Phys. Soc. Jpn. 69 (2000) 2092.
21. T. Munehisa and Y. Munehisa: Comput. Phys. Commun. 142 (2001) 176.
22. T. Munehisa and Y. Munehisa: Phys. Rev. B 49 (1994) 3347; Prog. Theor. Phys. 92 (1994) 309; ibid. 93 (1995) 251; ibid. 96 (1996) 59.
23. T. Munehisa and Y. Munehisa: Phys. Rev. B 49 (1994) 3347; Prog. Theor. Phys. 92 (1994) 309; ibid. 93 (1995) 251; ibid. 96 (1996) 59.
24. T. Munehisa and Y. Munehisa: Phys. Rev. B 49 (1994) 3347; Prog. Theor. Phys. 92 (1994) 309; ibid. 93 (1995) 251; ibid. 96 (1996) 59.
25. T. Munehisa and Y. Munehisa: Phys. Rev. B 49 (1994) 3347; Prog. Theor. Phys. 92 (1994) 309; ibid. 93 (1995) 251; ibid. 96 (1996) 59.
26. T. Munehisa and Y. Munehisa: J. Phys. Soc. Jpn. 66 (1997) 3876.
27. A. Koga and N. Kawakami: Phys. Rev. Lett. 84 (2000) 4461.
28. M. Albrecht and F. Mila: Europhys. Lett. 34 (1996) 145.
29. Results calculated on a 4 × 4 lattice did show size effects.
30. max higher than 3 one might observe the finite size effects on these lattices.
31. 1 if there were no helical order phase.
32. We also examined the eigenvector of the effective Hamiltonian to make sure that those components which include the nnn-triplets stay dominant.
33. S. Miyahara and K. Ueda: Proc. Int. Workshop Magnetic Excitations in Strongly Correlated Electrons, J. Phys. Soc. Jpn. 69 (2000) Suppl. B, p. 72.
34. Y. Fukumoto: J. Phys. Soc. Jpn. 70 (2001) 1397.