Quantum phases in a doped Mott insulator on the Shastry-Sutherland lattice
Strongly Correlated Electrons
2011-11-09 v1
Abstract
We propose the projected BCS wave function as the ground state for the doped Mott insulator SrCu2(BO3)2 on the Shastry-Sutherland lattice. At half filling this wave function yields the exact ground state. Adding mobile charge carriers, we find a strong asymmetry between electron and hole doping. Upon electron doping an unusual metal with strong valence bond correlations forms. Hole doped systems are d-wave RVB superconductors in which superconductivity is strongly enhanced by the emergence of inhomogeneous plaquette bond order.
Keywords
Cite
@article{arxiv.cond-mat/0702118,
title = {Quantum phases in a doped Mott insulator on the Shastry-Sutherland lattice},
author = {Jun Liu and Nandini Trivedi and Yongbin Lee and B. N. Harmon and Joerg Schmalian},
journal= {arXiv preprint arXiv:cond-mat/0702118},
year = {2011}
}
Comments
4 pages, 3 figures