Abstract
Far-infrared reflectivity studies on the polycrystalline intermetallic compound MgB2 with a superconducting transition temperature Tc = 39 K were performed at temperatures 20 K to 300 K. We observe a significant raise of the superconductmg-to-normal state reflectivity ratio below 70 cm-1, with a maximum at about 25-30 cm-1, which gives a lower estimate of the superconducting gap of 2Δ(0)≈ 3-4 meV.
| Original language | English |
|---|---|
| Pages (from-to) | 159-161 |
| Number of pages | 3 |
| Journal | European Physical Journal B |
| Volume | 21 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - May 2 2001 |
| Externally published | Yes |
Keywords
- 74.25.Gz Optical properties
- 74.70.Ad Metals; alloys and binary compounds (including A15, Laves phases, etc.)
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Gorshunov, B., Kuntscher, C. A., Haas, P., Dressel, M., Mena, F. P., Kuz'menko, A. B., Van Der Marel, D., Muranaka, T., & Akimitsu, J. (2001). Optical measurements of the superconducting gap in MgB2. European Physical Journal B, 21(2), 159-161. https://doi.org/10.1007/s100510170191