Local antiferromagnetic moments in the vortex cores of high-Tc superconductors are studied using the two-dimensional t-J model. It is found that the doping dependence is important and the local moments can appear only near half-filling. However, the absence of the large resonance peak in the local density of states reported in the scanning tunneling spectroscopy is due to the smallness of the core size in high-Tc superconductors. The similar phenomena around nonmagnetic impurities are compared with the vortex case.
- High-T superconductors
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering