Abstract
We introduce a new representation of S=1/2 quantum spins in terms of bond operators. The bond operators create and annihilate singlet and triplet bonds between a pair of spins. The representation is useful in describing the transition between dimerized and magnetically ordered phases of quantum antiferromagnets. It is used to obtain a mean-field theory of the two-dimensional frustrated quantum Heisenberg antiferromagnets considered recently by Gelfand, Singh, and Huse. The method should also be useful in the analysis of random quantum antiferromagnets.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 9323-9329 |
| Number of pages | 7 |
| Journal | Physical Review B |
| Volume | 41 |
| Issue number | 13 |
| DOIs | |
| State | Published - 1990 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics