Multiband and impurity effects in infrared and optical spectra of MgB2

Abstract

A short review of the optical and far-infrared measurements on MgB${}_2$ is given. Multiband and multigap effects are analyzed by comparing optical properties with other experiments and {\em ab initio} calculations. The covered topics are: the plasma frequency, electron-phonon interaction, impurity scattering, the effects of C and Al substitution, interband transitions and the far-infrared signatures of the superconducting gaps.

arXiv commentFor the Special Physica C Issue on MgB2 (2007), 11 pages, 12 figures

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Cited by in corpus (11)

• Universal Decomposition of the Low-Frequency Conductivity Spectra of Iron-Pnictides Uncovering Fermi-Liquid Behavior
• Optical properties of BaFe${}_{2-x}$Co${}_x$As${}_2$
• Ab initio calculation of low-energy collective charge-density excitations in MgB2
• Multi-band conductivity and multi-gap superconductivity in V3Si from optical measurements on films at terahertz frequencies
• Multi-gap superconductivity in a BaFe1.84Co0.16As2 film from optical measurements at terahertz frequencies
• Real-time Observation of Phonon-Mediated $\sigma$-$\pi$ Interband Scattering in MgB2
• Two-band parallel conductivity at terahertz frequencies in the superconducting state of MgB${}_2$.
• Aluminium substitution induced superstructures in Mg1-xAlxB2 (x = 0.0 to 0.50): An X-ray diffraction study
• Looking at the superconducting gap of iron pnictides
• Influence of Intrinsic Electronic Properties on Light Transmission through Subwavelength Holes on Gold and MgB2 Thin Films
• Effect of disorder on the far-infrared conductivity and on the microwave conductivity of two-band superconductors