2013/08/08 by Alfredo A. Vargas-Paredes, Marco Cariglia, Mauro M. Doria +3 · 4 citations
Materials Science · Physics and Astronomy · #Charge (physics) #Chemical and Physical Properties of Materials #Copper-based nanomaterials and applications #Magnetic field #Physics of Superconductivity and Magnetism #Pseudogap #Scattering #Skyrmion #Superconductivity #Symmetry (geometry) #Symmetry breaking #Tetragonal crystal system #cond-mat.supr-con
paper · pdf · doi:10.1007/s10948-013-2310-5
published in Journal of Superconductivity and Novel Magnetism 27(2), 349-352 (Springer Science+Business Media) · 4 pages, 1 figure
openalex publication_date 2013/08/08 · arxiv created 2013/10/16 · arxiv updated 2014/03/26 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We claim that the charge density wave recently found by resonant soft x-ray scattering in layered copper oxides is the tetragonal symmetry defined by the distance between neighbor Cu3+ ions in the CuO2 layer that determines the critical temperature. We find evidence that this tetragonal symmetry is a skyrmionic state, which is responsible for an unusual magnetic order and charge flow in the layers that leads to the breaking of the time reversal symmetry below the pseudogap line. The core of the skyrmions form pockets of local magnetic field piercing the superconducting layers in opposite direction to the rest of the unit cell.