Far-infrared transmission studies of a c-axis-oriented superconducting MgB2 thin film
J. H. Jung, K. W. Kim, H. J. Lee, M. W. Kim, T. W. Noh, W. N. Kang, Hyeong-Jin Kim, Eun-Mi Choi, C. U. Jung, Sung-Ik Lee
DOI 10.1103/PhysRevB.65.052413 · Physical Review B
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Abstract
We have reported far-infrared transmission measurements on a c-axis-oriented superconducting MgB2 thin film in the frequency range 30–250 cm−1. We found that these measurements were sensitive to the scattering rate 1/τ and the superconducting gap 2Δ. By fitting the experimental transmission spectra at 40 K and below, we obtained 1/τ and 2Δ(0) to be (700–1000) cm−1 and 42 cm−1, respectively. These two quantities suggest that the MgB2 film belongs to the dirty limit.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 33 | Pressure not reported | onset |
| MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 39 | Pressure not reported | unknown |
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