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Optical measurements of the superconducting gap in MgB 2 (2001)

Gorshunov, B. ; Kuntscher, C.A. ; Haas, P. ; [weitere]

Springer

The European physical journal 21 (2001), S. 159-161

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Details

ISSN: 1434-6036

Schlagwort(e): PACS. 74.25.Gz Optical properties – 74.70.Ad Metals; alloys and binary compounds (including A15, Laves phases, etc.)

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract: Far-infrared reflectivity studies on the polycrystalline intermetallic compound MgB2 with a superconducting transition temperature T c = 39 K were performed at temperatures 20 K to 300 K. We observe a significant raise of the superconducting-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.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s100510170191

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