Doped valence-bond solid and superconductivity on the Shastry-Sutherland lattice
Bohm-Jung Yang, Yong Baek Kim, Jaejun Yu, Kwon Park
DOI 10.1103/PhysRevB.77.104507 · Physical Review B
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Abstract
Motivated by recent experiments on SrCu2(BO3)2, we investigate the ground states of the doped Mott insulator on the Shastry-Sutherland lattice. To provide a unified theoretical framework for both the valence-bond solid state found in undoped SrCu2(BO3)2 and the doped counterpart being pursued in on-going experiments, we analyze the t−J−V model via the bond-operator formulation. It is found that superconducting states emerge upon doping with their properties crucially depending on the underlying valence-bond order. Implications to future experiments are discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| SrCu2(BO3)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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