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Transport properties of one-dimensional interacting fermions in aperiodic potentials | | J. C. Chaves
; I. I. Satija
; | | Date: |
19 Feb 1997 | | Journal: | Phys. Rev. B, 55 (1997) 14076 | | Subject: | Strongly Correlated Electrons; Disordered Systems and Neural Networks | cond-mat.str-el cond-mat.dis-nn | | Abstract: | Motivated by the existence of metal-insulator transition in one-dimensional non-interacting fermions in quasiperiodic and pseudorandom potentials, we studied interacting spinless fermion models using exact many-body Lanczos diagonalization techniques. Our main focus was to understand the effect of the fermion-fermion interaction on the transport properties of aperiodic systems. We calculated the ground state energy and the Kohn charge stiffness Dc. Our numerical results indicate that there exists a region in the interaction strength parameter space where the system may behave differently from the metallic and insulating phases. This intermediate phase may be characterized by a power law scaling of the charge stiffness constant in contrast to the localized phase where Dc scales exponentially with the size of the system. | | Source: | arXiv, cond-mat/9702171 | | Services: | Forum | Review | PDF | Favorites | |
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