title: Iron chalcogenide superconductors at high magnetic fields.
abstract: Iron chalcogenide superconductors have become one of the most investigated superconducting materials in recent years due to high upper critical fields, competing interactions and complex electronic and magnetic phase diagrams. The structural complexity, defects and atomic site occupancies significantly affect the normal and superconducting states in these compounds. In this work we review the vortex behavior, critical current density and high magnetic field pair-breaking mechanism in iron chalcogenide superconductors. We also point to relevant structural features and normal-state properties.
authors.affiliation: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Hechang
authors.initials: H
authors.lastname: Lei
authors.affiliation: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Kefeng
authors.initials: K
authors.lastname: Wang
authors.affiliation: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USA; Center for Nanophysics, and Advanced Materials, and Department of Physics, University of Maryland, College Park, MD 20742-4111, USA.
authors.forename: Rongwei
authors.initials: R
authors.lastname: Hu
authors.affiliation: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USA; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794-3800, USA.
authors.forename: Hyejin
authors.initials: H
authors.lastname: Ryu
authors.affiliation: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Milinda
authors.initials: M
authors.lastname: Abeykoon
authors.affiliation: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: Emil S
authors.initials: ES
authors.lastname: Bozin
authors.affiliation: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USA; Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794-3800, USA.
authors.forename: Cedomir
authors.initials: C
authors.lastname: Petrovic
keywords: critical current density; iron chalcogenide superconductors; upper critical fields; vortex physics