Disorder-induced zero bias anomalies in strongly correlated systems

          @misc{ pirsa_PIRSA:11040091,
            doi = {10.48660/11040091},
            url = {https://pirsa.org/11040091},
            author = {Wortis, Rachel},
            keywords = {Condensed Matter},
            language = {en},
            title = {Disorder-induced zero bias anomalies in strongly correlated systems},
            publisher = {Perimeter Institute},
            year = {2011},
            month = {apr},
            note = {PIRSA:11040091 see, \url{https://pirsa.org}}
          }
          

Abstract

Many of the most interesting electronic behaviors arise in materials with strong electron-electron correlations. Many of these same materials are disordered either intrinsically or due to doping. The combination of disorder and interactions generally gives rise to a feature in the density of states at the Fermi level, with two of the most influential examples being the Altshuler-Aronov anomaly and the Efros-Shklovskii Coulomb gap. Experiments on strongly correlated materials and recent numerical results on the Anderson-Hubbard model, however, show behavior which is inconsistent with both of these frameworks. This talk will present some of the features of the zero bias anomaly in strongly correlated systems, both in the case of a purely on-site interaction and in the presence of nearest-neighbor interactions, and it will describe the physical origin of some of these features.