Superconductivity in the Two-Dimensional t−J Model
S. Sorella, G. B. Martins, F. Becca, C. Gazza, L. Capriotti, A. Parola, E. Dagotto
DOI 10.1103/PhysRevLett.88.117002 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Using computational techniques, it is shown that pairing is a robust property of hole-doped antiferromagnetic insulators. In one dimension and for two-leg ladder systems, a BCS-like variational wave function with long-bond spin singlets and a Jastrow factor provides an accurate representation of the ground state of the t−J model, even though strong quantum fluctuations destroy the off-diagonal superconducting long-range order in this case. However, in two dimensions it is argued—and numerically confirmed using several techniques, especially quantum Monte Carlo—that quantum fluctuations are not strong enough to suppress superconductivity.
Similar papers
High Temperature Superconductivity in the 2D t-J Model at Metal-Insulator Transition: Variational Mean Field Results
similarity 0.93Ken Cappon · 1998 · arXiv:cond-mat/9806035
Source status unknown — claims are unverified
Superconductivity in the two-dimensional t-J model
similarity 0.91S. Sorella et al. · 2001 · arXiv:cond-mat/0110460
Source status unknown — claims are unverified
Spin-charge separation and unconventional superconductivity in the t−J model on the honeycomb lattice
similarity 0.89Jian-Jian Miao et al.
Source status unknown — claims are unverified
Spin exchange and superconductivity in a model for two-dimensional quarter-filled systems
similarity 0.89Andres Greco et al. · 2004 · arXiv:cond-mat/0409694
Source status unknown — claims are unverified
Superconductivity and antiferromagnetism for an extended Hubbard Hamiltonian: Role of correlated hopping in a single-band model
similarity 0.88G. A. Lara & G. G. Cabrera
Source status unknown — claims are unverified
Unconventional Superconducting Symmetry in a Checkerboard Antiferromagnet
similarity 0.88Huai-Xiang Huang et al. · 2006 · arXiv:cond-mat/0701007
Source status unknown — claims are unverified