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cond-mat.supr-con2010★ 13 cited
Superconductivity in strongly repulsive fermions: the role of kinetic-energy frustration
L. Isaev, G. Ortiz, C. D. Batista
We discuss a physical mechanism of a non-BCS nature which can stabilize a superconducting state in a {\it strongly repulsive} electronic system. By considering the two-dimensional…
cond-mat.str-el2010
Comment on "Quantum phase transition in the four-spin exchange antiferromagnet" by V. N. Kotov, D.-X. Yao, A. H. Castro-Neto, and D. K. Campbell
L. Isaev, G. Ortiz, J. Dukelsky
In a recent paper [Phys. Rev. {\bf B80}, 174403 (2009)] Kotov {\it et al.} studied the paramagnetic-to-antiferromagnetic transition in the - model. Their findings were claime…