Microwave Surface-Impedance Measurements of the Magnetic Penetration Depth in Single Crystal<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>Ba</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi mathvariant="bold">K</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>Fe</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>As</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>Superconductors: Evidence for a Disorder-Dependent Superfluid Density

Hashimoto, K.; Shibauchi, T.; Kasahara, S.; Ikada, K.; Tonegawa, S.; Kato, Terukazu; OKAZAKI, R.; J. van der Beek, C.; Kończykowski, M.; Takeya, Hiroyuki; Hirata, K.; Terashima, Takahito; Matsuda, Y.

doi:10.1103/physrevlett.102.207001

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Microwave Surface-Impedance Measurements of the Magnetic Penetration Depth in Single CrystalBa1−xKxFe2As2Superconductors: Evidence for a Disorder-Dependent Superfluid Density

Published in Physical Review Letters • May 19, 2009

Authors:

K. Hashimoto

T. Shibauchi

S. Kasahara

Abstract

We report high-sensitivity microwave measurements of the in-plane penetration depth lambda_{ab} and quasiparticle scattering rate 1/tau in several single crystals of the hole-doped Fe-based superconductor Ba(1-x)K(x)Fe(2)As(2) (x approximately 0.55). While a power-law temperature dependence of lambd...

Subject

Quasiparticle

London penetration depth

Penetration depth

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