Optical Properties of Doped Antiferromagnets

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DOI: 10.1023/A:1007706611183

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摘要: We investigate the consequences of an incommensurate magnetic order in doped La2-xSrxCuO4 using dynamical mean-field theory for effective single-band model. The high-energy optical transitions are due to excitations across large Mott-Hubbard 'gap,' while low-energy involve a pseudogap induced by local spin order. latter lead strong drop scattering rate at low ω, qualitative agreement with experimental data.(16 refs)

参考文章(11)
S-W. Cheong, G. Aeppli, T. E. Mason, H. Mook, S. M. Hayden, P. C. Canfield, Z. Fisk, K. N. Clausen, J. L. Martinez, Incommensurate magnetic fluctuations in La2-xSrxCuO4. Physical Review Letters. ,vol. 67, pp. 1791- 1794 ,(1991) , 10.1103/PHYSREVLETT.67.1791
O. Jepsen, A.I. Liechtenstein, O.K. Andersen, F. Paulsen, LDA energy bands, low-energy hamiltonians, t′, t″, t⊥ (k), and J⊥ Journal of Physics and Chemistry of Solids. ,vol. 56, pp. 1573- 1591 ,(1995) , 10.1016/0022-3697(95)00269-3
E. Arrigoni, G. C. Strinati, Doping-induced incommensurate antiferromagnetism in a Mott-Hubbard insulator Physical Review B. ,vol. 44, pp. 7455- 7465 ,(1991) , 10.1103/PHYSREVB.44.7455
Walter Metzner, Dieter Vollhardt, Correlated lattice fermions in d=∞ dimensions Physical Review Letters. ,vol. 62, pp. 324- 327 ,(1989) , 10.1103/PHYSREVLETT.62.324
Henk Eskes, Andrzej M. Oleś, Marcel B. J. Meinders, Walter Stephan, SPECTRAL PROPERTIES OF THE HUBBARD BANDS Physical Review B. ,vol. 50, pp. 17980- 18002 ,(1994) , 10.1103/PHYSREVB.50.17980
Douglas J. Scalapino, Steven R. White, Shoucheng Zhang, Insulator, metal, or superconductor: The criteria. Physical Review B. ,vol. 47, pp. 7995- 8007 ,(1993) , 10.1103/PHYSREVB.47.7995
Anil Khurana, Electrical conductivity in the infinite-dimensional Hubbard model. Physical Review Letters. ,vol. 64, pp. 1990- 1990 ,(1990) , 10.1103/PHYSREVLETT.64.1990
Liang Chen, C. Bourbonnais, T. Li, A.-M. Tremblay, Magnetic properties of the two-dimensional Hubbard model. Physical Review Letters. ,vol. 66, pp. 369- 372 ,(1991) , 10.1103/PHYSREVLETT.66.369
E. Dagotto, A. Moreo, F. Ortolani, D. Poilblanc, J. Riera, Static and dynamical properties of doped Hubbard clusters. Physical Review B. ,vol. 45, pp. 10741- 10760 ,(1992) , 10.1103/PHYSREVB.45.10741
S. Uchida, T. Ido, H. Takagi, T. Arima, Y. Tokura, S. Tajima, Optical spectra of La2-xSrxCuO4 : effect of carrier doping on the electronic structure of the CuO2 plane Physical Review B. ,vol. 43, pp. 7942- 7954 ,(1991) , 10.1103/PHYSREVB.43.7942