Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Wortis, R."'
Autor:
Wortis, R., Kennett, Malcolm P.
It has been proposed that the states of fully many-body localized systems can be described in terms of conserved local pseudospins. Due to the multitude of ways to define these, the explicit identification of the optimally local pseudospins in specif
Externí odkaz:
http://arxiv.org/abs/1611.07821
Autor:
Daley, P., Wortis, R.
Non-interacting systems with bounded disorder have been shown to exhibit sharp density of states peaks at the band edge which coincide with an energy range of abruptly suppressed localization. Recent work has shown that these features also occur in t
Externí odkaz:
http://arxiv.org/abs/1601.03010
Autor:
Perera, J., Wortis, R.
Publikováno v:
Phys. Rev. B 92, 085110 (2015)
After Anderson's prediction of disorder-induced insulating behavior, extensive work found no singularities in the density of states of localized systems. However, Johri and Bhatt recently uncovered the existence of a non-analyticity in the density of
Externí odkaz:
http://arxiv.org/abs/1507.04289
Autor:
Wortis, R., Mulindwa, Lister
Motivated by the novel electronic behaviors seen in transition metal oxides, we look for physical insight into disordered, strongly-correlated systems by exploring the atomic limit. In recent work, the atomic limit has provided a useful reference poi
Externí odkaz:
http://arxiv.org/abs/1405.7932
To expand the framework available for interpreting experiments on disordered strongly correlated systems, and in particular to explore further the strong-coupling zero-bias anomaly found in the Anderson-Hubbard model, we ask how this anomaly responds
Externí odkaz:
http://arxiv.org/abs/1203.5366
Publikováno v:
Phys. Rev. B 84, 045113 (2011)
Using a combination of numerical and analytical calculations, we study the disorder-induced zero bias anomaly (ZBA) in the density of states of strongly-correlated systems modeled by the two dimensional Anderson-Hubbard model. We find that the ZBA co
Externí odkaz:
http://arxiv.org/abs/1012.1031
Publikováno v:
Phys. Rev. B 83, 184206 (2011)
We test the usefulness of a generalized inverse participation ratio (GIPR) as a measure of Anderson localization. The GIPR differs from the usual inverse participation ratio in that it depends on the local density of states rather than on the single-
Externí odkaz:
http://arxiv.org/abs/1011.0659
Autor:
Wortis, R., Atkinson, W. A.
Motivated by experiments on doped transition metal oxides, this paper considers the interplay of interactions, disorder, kinetic energy and temperature in a simple system. An ensemble of two-site Anderson-Hubbard model systems has already been shown
Externí odkaz:
http://arxiv.org/abs/1008.2245
Autor:
Wortis, R., Atkinson, W. A.
Publikováno v:
Phys. Rev. B 82, 073107 (2010)
The combined effects of strong disorder, strong correlations and hopping in the Anderson-Hubbard model have been shown to produce a zero bias anomaly which has an energy scale proportional to the hopping and minimal dependence on interaction strength
Externí odkaz:
http://arxiv.org/abs/1004.3309
Publikováno v:
J. Phys. Cond. Mat. 21, 385601 (2009)
We study the effect of strong correlations on the zero bias anomaly (ZBA) in disordered interacting systems. We focus on the two-dimensional extended Anderson-Hubbard model, which has both on-site and nearest-neighbor interactions on a square lattice
Externí odkaz:
http://arxiv.org/abs/0808.3356