Abstract
We have studied via Green Function Monte Carlo (GFMC) the S= 1 2 Heisenberg quantum antiferromagnet in two dimensions on a square lattice. We obtain the ground state energy with only statistical errors E0/J = -0.6692(2), the staggered magnetization m†=0.31(2), and from the long wave length behavior of the structure factor, the spin wave velocity c/cO=1.14(5). We also show that the ground state wave function has long range pair correlations arising from the zero point motion of spin waves.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1455-1456 |
| Number of pages | 2 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 162-164 |
| Issue number | PART 2 |
| DOIs | |
| State | Published - Dec 1989 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering