Weak-disorder effects in the finite-charge infinite-U Hubbard model
dc.contributor.author | Huang, W. - N. | en_US |
dc.contributor.author | Rasul, J. W. | en_US |
dc.date.accessioned | 2006-12-19T18:55:26Z | |
dc.date.available | 2006-12-19T18:55:26Z | |
dc.date.issued | 1993-11-22 | en_US |
dc.identifier.citation | Huang, W -N; Rasul, J W (1993). "Weak-disorder effects in the finite-charge infinite-U Hubbard model." Journal of Physics: Condensed Matter. 5(47): 8877-8896. <http://hdl.handle.net/2027.42/48871> | en_US |
dc.identifier.issn | 0953-8984 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/48871 | |
dc.description.abstract | We calculate the effects of weak disorder on a strongly correlated electron system, namely a version of the infinite-U Hubbard model with general charge for which a 1/N expansion can be carried out (N being the orbital degeneracy). The partition function and quasiparticle decay rate are calculated to next leading order in the 1/N expansion by summing all ladder type diffusive corrections in the impurity potential. We find that away from the critical metal-insulator filling these quantities exhibit the power law behaviour expected on the basis of general weak-interacting theories. Very close to the metal-insulator filling, however, the situation changes and new, sublinear power law components are obtained. These new power laws are a result of the diffusion pole crossing over to a q4 behaviour, which is in turn a consequence of the 'holon' like propagation of the charge fluctuations in the pure system. | en_US |
dc.format.extent | 3118 bytes | |
dc.format.extent | 949021 bytes | |
dc.format.mimetype | text/plain | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en_US | |
dc.publisher | IOP Publishing Ltd | en_US |
dc.title | Weak-disorder effects in the finite-charge infinite-U Hubbard model | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationother | Dept. of Phys., Michigan Univ., Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationother | Dept. of Phys., Michigan Univ., Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/48871/2/cm934713.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1088/0953-8984/5/47/013 | en_US |
dc.identifier.source | Journal of Physics: Condensed Matter. | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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