2013/08/31 by Julien Garaud, Egor Babaev · 2 citations
Materials Science · Mathematics · Physics and Astronomy · #Algorithm #Computer science #Condensed matter physics #Dipole #Domain (mathematical analysis) #Domain wall (magnetism) #Geometry #Iron-based superconductors research #Magnetic domain #Magnetic field #Magnetization #Mathematics #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Signature (topology) #State (computer science) #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.112.017003
published as Phys. Rev. Lett. 112, 017003 (2014) · Replaced with a version in print in Physical Review Letters; Minor changes; 8 pages, 9 figures
openalex publication_date 2014/01/08 · arxiv created 2014/01/09 · arxiv updated 2014/01/10 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Arguments were recently advanced that hole-doped Ba(1-x)K(x)Fe2As2 exhibits the s+is state at certain doping. Spontaneous breaking of time-reversal symmetry in the s+is state dictates that it possess domain wall excitations. Here, we discuss what are the experimentally detectable signatures of domain walls in the s+is state. We find that in this state the domain walls can have a dipolelike magnetic signature (in contrast to the uniform magnetic signature of domain walls p+ip superconductors). We propose experiments where quench-induced domain walls can be stabilized by geometric barriers and observed via their magnetic signature or their influence on the magnetization process, thereby providing an experimental tool to confirm the s+is state.