A quantum electrodynamics (QED3) was presented in a box theory for field-induced spin and charge instabilities in cuprates, driven by local fluctuations of a pinned vortex. A d-wave superconductor suffered an antiferromagnetic (AF) instability closely related to the chiral symmetry breaking in (2+1)-dimensional QED3. Neutron scattering and scanning tunneling spectroscopy (STS) experiments revealed the presence of local AF and charge order in the vicinity of field-induced vortices. Direct experimental evidence showed that individual vortices underwent significant quantum fluctuations.
Publication Source (Journal or Book title)
Physical Review Letters
Franz, M., Sheehy, D., & Tešanović, Z. (2002). Magnetic field induced charge and spin instabilities in cuprate superconductors. Physical Review Letters, 88 (25 I), 2570051-2570054. https://doi.org/10.1103/PhysRevLett.88.257005