Abstract
Temperature-dependent and magnetic-field-dependent measurements of the microwave surface impedance of superconducting LaFeAsO0.9F0.1 (Tc≈26 K) reveal a very large upper critical field (Bc2≈56 T) and a large value of the depinning frequency (f0≈6 GHz); together with an upper limit for the effective London penetration depth, λeff≤200 nm, our results indicate a strong similarity between this system and the high-Tc superconducting cuprates.
Original language | English |
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Article number | 012507 |
Journal | Physical Review B |
Volume | 78 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2008 |