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, Yuji Matsuda

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)

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(As1-xPx) 2 is consistent with the observation of a linear temperature dependence of the low-temperature penetration depth in this material.

Original languageEnglish
Article number267002
JournalPhysical Review Letters
Volume105
Issue number26
DOIs
Publication statusPublished - Dec 22 2010
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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