Journal
PHYSICAL REVIEW LETTERS
Volume 105, Issue 26, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.267002
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Funding
- French National Research agency [ANR-07-Blan-0368]
- JSPS
- MEXT, Japan
- JSPS Research Foundation for Young Scientists
- Grants-in-Aid for Scientific Research [21340099] Funding Source: KAKEN
- Agence Nationale de la Recherche (ANR) [ANR-07-BLAN-0368] Funding Source: Agence Nationale de la Recherche (ANR)
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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.
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