Superconductivity in a quasi-one-dimensional spin liquid
- 1 May 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 49 (17), 12058-12061
- https://doi.org/10.1103/physrevb.49.12058
Abstract
The single-rung t-J ladder is analyzed in a mean-field theory using Gutzwiller renormalization of the matrix elements to account for strong correlation. The spin-liquid (resonance valence bond) state at half-filling evolves into a superconducting state upon doping. The order parameter has a modified d-wave character. A lattice of weakly coupled ladders should show a superconducting phase transition.Keywords
All Related Versions
This publication has 16 references indexed in Scilit:
- Superconductivity, Spin Gaps and Luttinger Liquids in a Class of CupratesEurophysics Letters, 1993
- Spin-gap state and superconducting correlations in a one-dimensional dimerizedt-JmodelPhysical Review B, 1993
- Excitation spectrum of Heisenberg spin laddersPhysical Review B, 1993
- Competition between singlet formation and magnetic ordering in one-dimensional spin systemsPhysical Review Letters, 1992
- Superconductivity in ladders and coupled planesPhysical Review B, 1992
- Spin gap in a generalized one-dimensionalt-JmodelPhysical Review B, 1991
- Phase diagram of the one-dimensionalt-JmodelPhysical Review Letters, 1991
- Spin waves in the flux-phase description of theS=1/2 Heisenberg antiferromagnetPhysical Review B, 1990
- A renormalised Hamiltonian approach to a resonant valence bond wavefunctionSuperconductor Science and Technology, 1988
- The Resonating Valence Bond State in La 2 CuO 4 and SuperconductivityScience, 1987