Optical measurements of the superconducting gap in MgB2

B. Gorshunov, C. A. Kuntscher, P. Haas, M. Dressel, F. P. Mena, A. B. Kuz'menko, D. Van Der Marel, T. Muranaka, Jun Akimitsu

Research output: Contribution to journalArticle

38 Citations (Scopus)

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 languageEnglish
Pages (from-to)159-161
Number of pages3
JournalEuropean Physical Journal B
Volume21
Issue number2
DOIs
Publication statusPublished - May 2 2001
Externally publishedYes

Fingerprint

optical measurement
reflectance
Superconducting transition temperature
Intermetallics
intermetallics
transition temperature
Infrared radiation
estimates
Temperature
temperature

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

Cite this

Gorshunov, B., Kuntscher, C. A., Haas, P., Dressel, M., Mena, F. P., Kuz'menko, A. B., ... 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

Optical measurements of the superconducting gap in MgB2 . / Gorshunov, B.; Kuntscher, C. A.; Haas, P.; Dressel, M.; Mena, F. P.; Kuz'menko, A. B.; Van Der Marel, D.; Muranaka, T.; Akimitsu, Jun.

In: European Physical Journal B, Vol. 21, No. 2, 02.05.2001, p. 159-161.

Research output: Contribution to journalArticle

Gorshunov, B, Kuntscher, CA, Haas, P, Dressel, M, Mena, FP, Kuz'menko, AB, Van Der Marel, D, Muranaka, T & Akimitsu, J 2001, 'Optical measurements of the superconducting gap in MgB2 ', European Physical Journal B, vol. 21, no. 2, pp. 159-161. https://doi.org/10.1007/s100510170191
Gorshunov B, Kuntscher CA, Haas P, Dressel M, Mena FP, Kuz'menko AB et al. Optical measurements of the superconducting gap in MgB2 European Physical Journal B. 2001 May 2;21(2):159-161. https://doi.org/10.1007/s100510170191
Gorshunov, B. ; Kuntscher, C. A. ; Haas, P. ; Dressel, M. ; Mena, F. P. ; Kuz'menko, A. B. ; Van Der Marel, D. ; Muranaka, T. ; Akimitsu, Jun. / Optical measurements of the superconducting gap in MgB2 In: European Physical Journal B. 2001 ; Vol. 21, No. 2. pp. 159-161.
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