Superconductivity in the Hubbard model: a hidden-order diagnostics from the Luther-Emery phase on ladders
Short-range antiferromagnetic correlations are known to open a spin gap in the repulsive Hubbard model on ladders with $M$ legs, when $M$ is even. We show that the spin gap originates from the formation of correlated pairs of electrons with opposite spin, captured by the hidden ordering of a spin...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SciPost
2019-02-01
|
| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.6.2.018 |