Optical excitations in Sr2 CuO3

Physical Review B - Condensed Matter and Materials Physics

Volumn 79, Issue 8, 2009, Pages

  Kim, K W ^a,b   Gu, G D ^c  

^a UNIVERSITY OF FRIBOURG   (Switzerland)

^b Seoul National University   (South Korea)

^c BROOKHAVEN NATIONAL LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 62349118415     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.79.085121     Document Type: Article

References (22)

1. F. C. Zhang and T. M. Rice, Phys. Rev. B 37, 3759 (1988). 10.1103/PhysRevB.37.3759
2. M. Imada, A. Fujimori, and Y. Tokura, Rev. Mod. Phys. 70, 1039 (1998). 10.1103/RevModPhys.70.1039
3. T. Arima, T. Kikuchi, M. Kasuya, S. Koshihara, Y. Tokura, T. Ido, and S. Uchida, Phys. Rev. B 44, 917 (1991). 10.1103/PhysRevB.44.917
4. S. L. Cooper, D. Reznik, A. Kotz, M. A. Karlow, R. Liu, M. V. Klein, W. C. Lee, J. Giapintzakis, D. M. Ginsberg, B. W. Veal, and A. P. Paulikas, Phys. Rev. B 47, 8233 (1993). 10.1103/PhysRevB.47.8233
5. H. S. Choi, Y. S. Lee, T. W. Noh, E. J. Choi, Y. Bang, and Y. J. Kim, Phys. Rev. B 60, 4646 (1999). 10.1103/PhysRevB.60.4646
6. H. Kishida, H. Matsuzaki, H. Okamoto, T. Manabe, M. Yamashita, Y. Taguchi, and Y. Tokura, Nature (London) 405, 929 (2000). 10.1038/35016036
7. M. Ono, K. Miura, A. Maeda, H. Matsuzaki, H. Kishida, Y. Taguchi, Y. Tokura, M. Yamashita, and H. Okamoto, Phys. Rev. B 70, 085101 (2004). 10.1103/PhysRevB.70.085101
8. T. E. Kidd, T. Valla, P. D. Johnson, K. W. Kim, G. D. Gu, and C. C. Homes, Phys. Rev. B 77, 054503 (2008). 10.1103/PhysRevB.77.054503
9. K. W. Kim, G. D. Gu, C. C. Homes, and T. W. Noh, Phys. Rev. Lett. 101, 177404 (2008). 10.1103/PhysRevLett.101.177404
10. A. S. Moskvin, J. Málek, M. Knupfer, R. Neudert, J. Fink, R. Hayn, S. L. Drechsler, N. Motoyama, H. Eisaki, and S. Uchida, Phys. Rev. Lett. 91, 037001 (2003). 10.1103/PhysRevLett.91.037001
11. H. Kishida, M. Ono, K. Miura, H. Okamoto, M. Izumi, T. Manako, M. Kawasaki, Y. Taguchi, Y. Tokura, T. Tohyama, K. Tsutsui, and S. Maekawa, Phys. Rev. Lett. 87, 177401 (2001). 10.1103/PhysRevLett.87.177401
12. R. Neudert, M. Knupfer, M. S. Golden, J. Fink, W. Stephan, K. Penc, N. Motoyama, H. Eisaki, and S. Uchida, Phys. Rev. Lett. 81, 657 (1998). 10.1103/PhysRevLett.81.657
13. H. Benthien and E. Jeckelmann, Phys. Rev. B 75, 205128 (2007). 10.1103/PhysRevB.75.205128
14. M. Ono, H. Kishida, and H. Okamoto, Phys. Rev. Lett. 95, 087401 (2005). 10.1103/PhysRevLett.95.087401
15. It is worth noting that Matsueda (Ref.) interpreted the hump structure (a long tail above the excitonic peak) as another peak based on one-dimensional two-band Hubbard model. They claimed that the excitonic peak corresponds to the excitation from the lower Hubbard band (from the hole point of view) to the singlet bound state while the hump structure originates by the excitation from the lower Hubbard band to the unbound state, which correspond to the α and β excitations, respectively (see Ref.). However, this scenario cannot explain the observed anisotropy between a and b axes of Sr2 CuO3, neither the much larger charge-transfer gaps of edge-sharing chain compounds than those of compounds with corner-sharing structures (Ref.).
16. E. Hanamura, N. T. Dan, and Y. Tanabe, Phys. Rev. B 62, 7033 (2000). 10.1103/PhysRevB.62.7033
17. Y. Mizuno, T. Tohyama, S. Maekawa, T. Osafune, N. Motoyama, H. Eisaki, and S. Uchida, Phys. Rev. B 57, 5326 (1998). 10.1103/PhysRevB.57.5326
18. In the excitonic cluster model of Hanamura (Ref.) the eigenenergies of excited states within single CuO4 plaquette are similar to the energy of the peak B.
19. F. C. Zhang and K. K. Ng, Phys. Rev. B 58, 13520 (1998). 10.1103/PhysRevB.58.13520
20. J. Málek, S.-L. Drechsler, U. Nitzsche, H. Rosner, and H. Eschrig, Phys. Rev. B 78, 060508 (R) (2008). 10.1103/PhysRevB.78.060508
21. H. Matsueda, A. Ando, T. Tohyama, and S. Maekawa, Phys. Rev. B 77, 193112 (2008). 10.1103/PhysRevB.77.193112
22. H. Matsueda, T. Tohyama, and S. Maekawa, Phys. Rev. B 71, 153106 (2005). 10.1103/PhysRevB.71.153106