Abstract
We examine special extended spin S = 1/2 fermionic and hard core bosonic t-Jz models with nearest neighbour and next nearest neighbour interactions to find exact ground states. Some of these models display an exponentially large degeneracy with diagonal stripe-like patterns.
| Original language | English |
|---|---|
| Pages (from-to) | 515-526 |
| Number of pages | 12 |
| Journal | Philosophical Magazine Letters |
| Volume | 87 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2007 |