Coexistence of antiferromagnetism and superconductivity of t-t-J model on honeycomb lattice
arXiv:1404.1795 · doi:10.1016/j.physb.2015.01.010
Abstract
Motivated by recent experimental study of antiferromagnetic property of honeycomb compound InCuVO [Yan \textit{et al.}, PRB \textbf{85}, 085102 (2012)], we explore possible superconductivity and its coexistence with antiferromagnetism. We use the t-t-J model on the honeycomb lattice as our starting point and employ the slave-boson mean-field theory. In the antiferromagnetic normal state, the characteristic doping evolution of Fermi surface shows that only one effective singe band is active, which suggests that the potential pairing symmetry is the time-reversal symmetry breaking , rather than the extended -wave. It is found that this superconducting state coexists with the antiferromagnetism in a broad doping regime, which is consistent with the numerical calculations. The local density of states and its thermodynamic property of the superconducting state has been studied in detail with an effective single-band picture for understanding other physical observable such as superfluid density. The present work may be useful in experimentally exploring possible superconductivity of this kind of materials on the honeycomb lattice and contributes to the understanding of the unconventional superconductivity on general two-dimensional correlated electron systems.
arXiv comment11 figures, accepted by Physica B
References in corpus (23)
- Superconductivity in Iron Compounds
- A Common Thread: the pairing interaction for the unconventional superconductors
- Electron-Electron Interactions in Graphene: Current Status and Perspectives
- Scanning tunneling spectroscopy of high-temperature superconductors
- Progress and perspectives on the electron-doped cuprates
- Quantum spin-liquid emerging in two-dimensional correlated Dirac fermions
- Superconducting states of pure and doped graphene
- Absence of a Spin Liquid Phase in the Hubbard Model on the Honeycomb Lattice
- Density waves and Cooper pairing on the honeycomb lattice
- Resonating valence bonds and mean-field d-wave superconductivity in graphite
- Possibility of High Tc Superconductivity in doped Graphene
- Functional renormalization for spontaneous symmetry breaking in the Hubbard model
- Superconductivity from weak repulsion in hexagonal lattice systems
- Time-reversal symmetry breaking superconducting ground state in the doped Mott insulator on the honeycomb lattice
- Correlated Dirac Particles and Superconductivity on the Honeycomb Lattice
- RVB Contribution to Superconductivity in
- Superfluid response in electron-doped cuprate superconductors
- Nodeless d-wave superconducting pairing due to residual antiferromagnetism in underdoped PrCeCuO
- Nodal pairing and topological phases on the triangular lattice: unconventional superconducting state of NaCoOHO
- Magnetic properties in the doped spin-1/2 honeycomb-lattice compound InCuVO
- Doping dependent charge transfer gap and realistic electronic model of n-type cuprate superconductors
- Fermi surface evolution in the antiferromagnetic state for the electron-doped t-t'-t''-J model
- Interlayer magnetic frustration driven quantum spin disorder in honeycomb compound InCuVO