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 |