Electronic Structure, Electron-Phonon Coupling, and Multiband Effects in MgB2

TL;DR

This paper reviews the electronic structure, electron-phonon interactions, and multiband effects in MgB2, comparing theoretical calculations with experiments and discussing implications for its superconducting and transport properties.

Contribution

It provides a comprehensive review of first-principles calculations and the role of multiband effects in MgB2's superconductivity, highlighting open questions.

Findings

Electronic structure and electron-phonon coupling are well-characterized.

Multiband effects significantly influence MgB2's superconductivity.

Open questions remain in understanding transport properties.

Abstract

We review the current situation in the theory of superconducting and transport properties of MgB2. First principle calculations of of the electronic structure and electron-phonon coupling are discussed and compared with the experiment. We also present a brief description of the multiband effects in superconductivity and transport, and how these manifest themselves in MgB2. We also mention some yet open questions.