2005/10/31 by Qian Wang, Haiyong Chen, H. -Y. Chen +3
Materials Science · Physics and Astronomy · #Bound state #Checkerboard #Condensed matter physics #Density of states #Geometry #Iron-based superconductors research #Ising model #Lattice (music) #Local density of states #Magnetic field #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Plane (geometry) #Quantum mechanics #Quantum tunnelling #Rare-earth and actinide compounds #Spectroscopy #Square lattice #State (computer science) #Superconductivity #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.96.117006
published as Phys. Rev. Lett. 96, 117006 (2006) · 5 pages, 5 figures Type and grammaratic errors corrected. Last figure replaced by colored one. To appear in PRL
arxiv created 2006/03/20 · openalex publication_date 2006/03/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states for two-dimensional s- and d-wave superconductors (s- and d-SCs) are self-consistently studied under an in-plane magnetic field. While the stripe solution of the order parameter is found to have lower free energy in s-SCs, a square lattice solution appears to be energetically more favorable in the case of d-SCs. At certain symmetric sites, we find that the features in the local density of states (LDOS) can be ascribed to two types of bound states. We also show that the LDOS maps for d-SCs exhibit bias-energy-dependent checkerboard patterns. These characteristics can serve as signatures of the FFLO states.