rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Charge Dynamics in 122 Iron-Based Superconductors
  name:
    name part: Charnukha, Aliaksei.
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: SpringerLink (Online service)
  type of resource: text
  origin info:
    place:
      place term: gw
    date issued: 2014
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: electronic
    form: electronic resource
    reformatting quality: access
    form: remote
    extent: XI, 130 p. 43 illus., 24 illus. in color. online resource.
  abstract: This thesis combines highly accurate optical spectroscopy data on the recently discovered iron-based high-temperature superconductors with an incisive theoretical analysis. Three outstanding results are reported: (1) The superconductivity-induced modification of the far-infrared conductivity of an iron arsenide with minimal chemical disorder is quantitatively described by means of a strong-coupling theory for spin fluctuation mediated Cooper pairing. The formalism developed in this thesis also describes prior spectroscopic data on more disordered compounds. (2) The same materials exhibit a sharp superconductivity-induced anomaly for photon energies around 2.5 eV, two orders of magnitude larger than the superconducting energy gap. The author provides a qualitative interpretation of this unprecedented observation, which is based on the multiband nature of the superconducting state. (3) The thesis also develops a comprehensive description of a superconducting, yet optically transparent iron chalcogenide compound. The author shows that this highly unusual behavior can be explained as a result of the nanoscopic coexistence of insulating and superconducting phases, and he uses a combination of two complementary experimental methods - scanning near-field optical microscopy and low-energy muon spin rotation - to directly image the phase coexistence and quantitatively determine the phase composition. These data have important implications for the interpretation of data from other experimental probes.
  table of contents: Introduction -- Iron-based superconductors -- Experimental and theoretical methods -- Results and discussion -- Summary.
  note: by Aliaksei Charnukha.
  subject:
    topic: Physics
  subject:
    topic: Superconductivity
  subject:
    topic: Superconductors
  subject:
    topic: Nanoscale science
  subject:
    topic: Nanoscience
  subject:
    topic: Nanostructures
  subject:
    topic: Spectroscopy
  subject:
    topic: Microscopy
  subject:
    topic: Optical materials
  subject:
    topic: Electronic materials
  subject:
    topic: Nanotechnology
  subject:
    topic: Physics
  subject:
    topic: Strongly Correlated Systems, Superconductivity
  subject:
    topic: Spectroscopy and Microscopy
  subject:
    topic: Optical and Electronic Materials
  subject:
    topic: Nanoscale Science and Technology
  subject:
    topic: Nanotechnology
  classification: QC611.9-611.98
  classification: 530.41
  related item:
    title info:
      title: Springer eBooks
  related item:
    title info:
      title: Springer Theses, Recognizing Outstanding Ph.D. Research
  identifier: 9783319011929
  identifier: http://dx.doi.org/10.1007/978-3-319-01192-9
  record info:
    record creation date: 130912
    record change date: 20151030021116.0
    record identifier: 978-3-319-01192-9