Abstract
Using an optimization variational Monte Carlo method, we study the effect of diagonal transfer t′ in a two-dimensional Hubbard model on stability of d-wave superconductivity (SC) and antiferromagnetism (AF). For hole doping (t′/t<0), the condensation energy of SC is enhanced by a couple of times, while that of AF rapidly decreases with increasing |t′/t|, and AF itself is intrinsically unstable for t′/t≲0. For electron doping (t′/t>0), conversely, SC tends to be suppressed, whereas the AF state not only comes to have a low energy but recovers the intrinsic stability. These results well explain various aspects of cuprate superconductors.
| Original language | English |
|---|---|
| Pages (from-to) | 47-49 |
| Number of pages | 3 |
| Journal | Journal of Physics and Chemistry of Solids |
| Volume | 67 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 2006 Jan 1 |
Keywords
- D. Superconductivity
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
Fingerprint Dive into the research topics of 'Stability of superconductivity and antiferromagnetism in two-dimensional Hubbard model with diagonal transfer'. Together they form a unique fingerprint.
Cite this
Yokoyama, H., Tanaka, Y., & Ogata, M. (2006). Stability of superconductivity and antiferromagnetism in two-dimensional Hubbard model with diagonal transfer. Journal of Physics and Chemistry of Solids, 67(1-3), 47-49. https://doi.org/10.1016/j.jpcs.2005.10.024