Optical properties of an interacting large polaron gas

European Physical Journal B

Volumn 12, Issue 1, 1999, Pages 17-22

  Cataudella, V ^a   De Filippis, G ^b   Iadonisi, G ^a  

^a INFM   (Italy)

^b UNIVERSITY OF SALERNO   (Italy)

Author keywords

71.38.+i Polarons and electron phonon interactions

Indexed keywords

EID: 0002625223     PISSN: 14346028     EISSN: None     Source Type: Journal    
DOI: 10.1007/s100510050970     Document Type: Article

References (49)

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49. In this paper we calculate the normal state conductivity of a homogeneous three dimensional (3D) system. On the other hand it is well known that almost all of the cuprates show strong anisotropy and, when the electric field is polarized along the conducting planes, the optical response is very close to that of a homogeneous 2D system. In this paper we assume that our 3D results are qualitatively equal to those of a homogeneous 2D system. This assumption is supported by the fact that, for non interacting polarons, a simple scaling relation connects the 2D and the 3D impedance functions (see F.M. Peeters and J.T. Devreese, Phys. Rev. B 36, 4442 (1987)). The inclusion of the anisotropy is currently under study and it will be discussed in a future work.