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Superconductivity in the two-dimensional t-J model
S. Sorella, G. B. Martins, F. Becca +4
Using computational techniques, it is shown that pairing is a robust property of hole doped antiferromagnetic (AF) insulators. In one dimension (1D) and for two-leg ladder systems,…
The Race to Beat the Cuprates
Elbio Dagotto
Recent results reported in Science by Schon et al. using field-effect doping to study ladders and fullerenes are here described.
Qualitative understanding of the sign of t' asymmetry in the extended t-J Model and relevance for pairing properties
G. B. Martins, J. C. Xavier, L. Arrachea +1
Numerical calculations illustrate the effect of the sign of the next nearest-neighbor hopping term t' on the 2-hole properties of the t-t'-J model. Working mainly on 2-leg ladders,…
Prediction of Orbital Ordering in Single-Layered Ruthenates
Takashi Hotta, Elbio Dagotto
The key role of the orbital degree of freedom to understand the magnetic properties of layered ruthenates is here discussed. In the G-type antiferromagnetic phase of CaRuO,…
Colossal Effects in Transition Metal Oxides Caused by Intrinsic Inhomogeneities
J. Burgy, M. Mayr, V. Martin-Mayor +2
The influence of quenched disorder on the competition between ordered states separated by a first-order transition is investigated. A phase diagram with features resembling quantum…