Scanning SQUID microscopy on polycrystalline SmFeAsO_{0.85} and NdFeAsO_{0.94}F_{0.06} Metadata

Metadata describes a digital item, providing (if known) such information as creator, publisher, contents, size, relationship to other resources, and more. Metadata may also contain "preservation" components that help us to maintain the integrity of digital files over time.

Title

  • Main Title Scanning SQUID microscopy on polycrystalline SmFeAsO_{0.85} and NdFeAsO_{0.94}F_{0.06}

Creator

  • Author: Hicks, Clifford W.
    Creator Type: Personal
  • Author: Lippman, Thomas M.
    Creator Type: Personal
  • Author: Moler, Kathryn A.
    Creator Type: Personal
    Creator Info: /Stanford U., Geballe Lab.
  • Author: Huber, Martin E.
    Creator Type: Personal
    Creator Info: /Colorado U.
  • Author: Ren, Zhi-An
    Creator Type: Personal
  • Author: Zhao, Zhong-Xian
    Creator Type: Personal
    Creator Info: /Beijing, Inst. Phys.

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Stanford Linear Accelerator Center
    Place of Publication: [Menlo Park, California]
    Additional Info: SLAC

Date

  • Creation: 2009-01-08

Language

  • English

Description

  • Content Description: The order parameter of the recently-discovered ferric arsenide family of superconductors remains uncertain. Some early experiments on polycrystalline samples suggested line nodes in the order parameter, however later experiments on single crystals have strongly supported fully-gapped superconductivity. An absence of nodes does not rule out unconventional order: {pi} phase shifts between the separate Fermi sheets and time-reversal symmetry-breaking components in the order parameter remain possibilities. One test for unconventional order is scanning magnetic microscopy on well-coupled polycrystalline samples: d- or p-wave order would result in orbital frustration, leading to spontaneous currents and magnetization in the superconducting state. We have performed scanning SQUID microscopy on SmFeAsO{sub 0.85} and NdFeAsO{sub 0.94}F{sub 0.06}, and in neither material do we find spontaneous orbital currents, ruling out p- or d-wave order.
  • Physical Description: 4 pages

Subject

  • Keyword: Iron Fluorides
  • Keyword: Samarium Compounds
  • Keyword: Math And Math Physics,Matsci
  • Keyword: Neodymium Compounds
  • STI Subject Categories: 36 Materials Science
  • Keyword: Arsenic Oxides
  • Keyword: Superconductors
  • Keyword: Order Parameters
  • Keyword: Arsenic Fluorides Math And Math Physics,Matsci
  • Keyword: Iron Oxides

Source

  • Journal Name: J.Phys.Soc.Jap.Suppl.77:87-90,2008; Conference: Presented atInternational Symposium on Fe-Pnictide Superconductors, , 6/28/2008-6/29/2008

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: SLAC-PUB-13506
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 945285
  • Archival Resource Key: ark:/67531/metadc899897

Note

  • Display Note: http://www.slac.stanford.edu/cgi-wrap/pubpage?slac-pub-13506.html