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Photoinduced Absorption in the La2−xSrxCuO4–5 System: 2 eV Bandgap and Long-Lived Defect States

Published online by Cambridge University Press:  28 February 2011

A. J. Epstein ,
M. G. Roe ,
J. M. Ginder ,
F. Zuo ,
R. P. McCall ,
Y. Song ,
X.-D. Chen ,
J. P. Golben ,
J. R. Gaines  and
P. E. Wigen
...Show all authors
A. J. Epstein
Affiliation:
Department of Physics and Department of Chemistry, The Ohio State University, Columbus, Ohio 43210–1106
M. G. Roe
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210–1106
J. M. Ginder
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210–1106
F. Zuo
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210–1106
R. P. McCall
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210–1106
Y. Song
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210–1106
X.-D. Chen
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210–1106
J. P. Golben
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210–1106
J. R. Gaines
Affiliation:
Department of Physics, University of Hawaii at Manoa, Honolulu, Hawaii 96822
P. E. Wigen
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210–1106
E. Ehrenfreund
Affiliation:
Department of Physics, Technion-Israel Institute of Technology, Haifa, Israel
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Extract

The discovery of high temperature superconductivity in the La-Ba-Cu-O system [1] has stimulated extensive study of these and related materials. A number of band structure calculations [2,3] have been performed for these materials to explain their electronic structure, and models invoking electron-phonon, electron-electron, or excitonic mechanisms have been proposed for the unusually high Tc [4–9]. Several optical studies were performed[10–12] on sintered pellets or single crystals in an attempt to reveal the electronic structure. It is important to understand the electronic structure of the parent La2CuO4 compound and the defect states that are introduced into the system upon addition or removal of electrons- accomplished by doping or photoexcitation-as they are critical in understanding the mechanism for superconductivity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 857
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

1. Bednorz, J.A. and Müller, K.A., Z. Phys. B64, 189 (1986).Google Scholar
2. Mattheiss, L.F., Phys. Rev. Lett. 58, 1028 (1987).Google Scholar
3. Weber, W., Phys. Rev. Lett. 58, 1371 (1987);Google Scholar
Kasowski, R.V., Hsu, W.Y., and Herman, F., Solid State Commun. 63, 1077 (1987).Google Scholar
4. Kivelson, S., Physical Review B, 1 November 1987;Google Scholar
Kivelson, S.A., Rokhsar, D.S., and Sethna, J.P., Phys. Rev. B35, 8865 (1987).Google Scholar
5. Anderson, P.W., Science 235, 1196 (1987).Google Scholar
6. Rice, M.J. and Wang, Y.R., to be published.Google Scholar
7. Parmenter, R.H., Phys. Rev. Lett. 59, 923 (1987).Google Scholar
8. Hirsch, J.E., Phys. Rev. Lett. 59, 228 (1987).Google Scholar
9. Emery, V.J., Phys. Rev. Lett. 58, 2794 (1987).Google Scholar
10. Herr, S.L., Kamarás, K., Porter, C.D., Doss, M.G., Tanner, D.B., Bonn, D.A., Greedan, J.E., Stager, C.V., and Timusk, T., Phys. Rev. B36, 733 (1987).Google Scholar
11. Etemad, S., Aspnes, D.E., Kelly, M.K., Thompson, R., Tarascon, J.-M., and Hull, G.W., to be published.Google Scholar
12. Koide, T., Fukutani, H., Fujiimori, A., Suzuki, R., Shidara, T., Takahashi, T., Hosoya, S., and Sato, M., to be published.Google Scholar
13. Chen, X.D., Lee, S.Y., Golben, J.P., Lee, S.I., McMichael, R.D., Song, Y., Noh, T.W. and Gaines, J.R., Rev. Sci. Inst. 58, 1565 (1987).Google Scholar
14. Ginder, J.M., Roe, M.G., Song, Y., McCall, R.P., Gaines, J.R., Ehrenfreund, E., and Epstein, A.J., to be published.Google Scholar
15. Kim, Y.H., Heeger, A.J., Acedo, L., Stucky, G. and Wudl, F., Physical Review B, 1 November 1987.Google Scholar
16. Vardeny, Z. and Tauc, J., Phys. Rev. Lett. 54, 1844 (1985).Google Scholar
17. Roe, M.G., Ginder, J.M., Song, Y., McCall, R.P., Gaines, J.R., Ehrenfreund, E., and Epstein, A.J., to be published.Google Scholar
18. Ehrenfreund, E., Vardeny, Z., Brafman, O., Weagley, R., and Epstein, A.J., Phys. Rev. Lett. 57, 2081 (1986).Google Scholar