Quasiparticle Scattering Induced by Charge Doping of Iron-Pnictide Superconductors Probed by Collective Vortex Pinning

Cornelis J. van der Beek, Marcin Konczykowski, Shigeru Kasahara, Takahito Terashima, Ryuji Okazaki, Takasada Shibauchi, and Yuji Matsuda
Phys. Rev. Lett. 105, 267002 – Published 22 December 2010

Abstract

Charge doping of iron-pnictide superconductors leads to collective pinning of flux vortices, whereas isovalent doping does not. Moreover, flux pinning in the charge-doped compounds is consistently described by the mean-free path fluctuations introduced by the dopant atoms, allowing for the extraction of the elastic quasiparticle scattering rate. The absence of scattering by dopant atoms in isovalently doped BaFe2(As1xPx)2 is consistent with the observation of a linear temperature dependence of the low-temperature penetration depth in this material.

  • Figure
  • Figure
  • Figure
  • Received 12 May 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.267002

© 2010 The American Physical Society

Authors & Affiliations

Cornelis J. van der Beek1, Marcin Konczykowski1, Shigeru Kasahara2, Takahito Terashima2, Ryuji Okazaki3, Takasada Shibauchi3, and Yuji Matsuda3

  • 1Laboratoire des Solides Irradiés, CNRS UMR 7642 & CEA-DSM-IRAMIS, Ecole Polytechnique, 91128 Palaiseau, France
  • 2Research Center for Low Temperature and Materials Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
  • 3Department of Physics, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 105, Iss. 26 — 31 December 2010

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×