Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-10-04
Phys. Rev. Lett. 103, 027001 (2009)
Physics
Condensed Matter
Strongly Correlated Electrons
4+ pages, 5 figures, minor corrections, version as published
Scientific paper
10.1103/PhysRevLett.103.027001
Motivated by numerical evidence of the valence bond groundstate of the two-dimensional Heisenberg pyrochlore lattice, we argue using a $t$-$J$ model that it evolves under doping into novel phases characterized by superconductivity coexisting with the underlying valence-bond solid order. A fermionic mean-field theory supplemented by exact diagonalization results provide strong arguments in favor of the stability of such supersolid phases. The resemblance with modulated superconducting patterns in high-$T_c$ cuprates as well as possible relevance to frustrated noncuprate superconductors such as spinels and pyrochlores is discussed.
Poilblanc Didier
Raczkowski Marcin
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