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Metal-insulator transition in a weakly interacting disordered electron system

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dc.contributor.author Ekuma, C. E.
dc.contributor.author Yang, S. -X.
dc.contributor.author Terletska, H.
dc.contributor.author Tam, K. -M.
dc.contributor.author Vidhyadhiraja, N. S.
dc.contributor.author Moreno, J.
dc.contributor.author Jarrell, M.
dc.date.accessioned 2016-12-22T11:23:49Z
dc.date.available 2016-12-22T11:23:49Z
dc.date.issued 2015
dc.identifier.citation Physical Review B en_US
dc.identifier.citation 92 en_US
dc.identifier.citation 20 en_US
dc.identifier.citation Ekuma, C. E.; Yang, S. X.; Terletska, H.; Tam, K. M.; Vidhyadhiraja, N. S.; Moreno, J.; Jarrell, M., Metal-insulator transition in a weakly interacting disordered electron system. Physical Review B 2015, 92 (20), 5. en_US
dc.identifier.issn 1098-0121
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/1952
dc.description Restricted access en_US
dc.description.abstract The interplay of interactions and disorder is studied using the Anderson-Hubbard model within the typical medium dynamical cluster approximation. Treating the interacting, nonlocal cluster self-energy [Sigma(c)[(g) over tilde](i, j not equal i)] up to second order in the perturbation expansion of interactions, U-2, with a systematic incorporation of nonlocal spatial correlations and diagonal disorder, we explore the initial effects of electron interactions (U) in three dimensions. We find that the critical disorder strength (W-c(U)), required to localize all states, increases with increasing U; implying that the metallic phase is stabilized by interactions. Using our results, we predict a soft pseudogap at the intermediate W close to W-c(U) and demonstrate that the mobility edge (omega(epsilon)) is preserved as long as the chemical potential, mu, is at or beyond the mobility edge energy. en_US
dc.description.uri 1550-235X en_US
dc.description.uri http://dx.doi.org/10.1103/PhysRevB.92.201114 en_US
dc.language.iso English en_US
dc.publisher American Physical Society en_US
dc.rights ?American Physical Society, 2015 en_US
dc.subject Condensed Matter Physics en_US
dc.subject Quantum Impurity Models en_US
dc.subject Monte-Carlo Method en_US
dc.subject 2 Dimensions en_US
dc.subject Anderson Localization en_US
dc.subject Fermion Systems en_US
dc.subject Hubbard-Model en_US
dc.subject Diffusion en_US
dc.subject Absence en_US
dc.title Metal-insulator transition in a weakly interacting disordered electron system en_US
dc.type Article en_US


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