Isotope Effect on Electron-Phonon Coupling in MgB2

A ~3.5 meV shift in the kink structure around 70 meV in the σ band is measured for the Mg(10)B2 isotope. The dataset contains spectroscopic results investigating the isotope effect on electron-phonon interaction in the superconductor MgB2. The research was conducted by Daixiang Mou using tunable laser-based Angle Resolved Photoemission Spectroscopy.

Use Cases

• Analyze the shift in the σ band kink structure (~3.5 meV) to quantify the isotope effect on the E2g phonon mode coupling.
• Compare binding energy spectra between Mg(10)B2 and standard MgB2 samples to isolate isotope substitution impacts.
• Model the electron-phonon interaction strength using the measured kink structure parameters around 70 meV.
• Use the spectral data as a benchmark for validating theoretical models of isotope effects in multiband superconductors.

Strengths

• Provides a precise measurement of a ~3.5 meV isotope-induced shift in a key spectroscopic feature.
• Focuses on a well-defined, benchmark system (MgB2) for studying electron-phonon coupling.

Limitations

• Specific sample size, row count, and full feature set are not provided.
• Data is derived from a single study, limiting generalizability to other superconducting materials without further validation.

Provenance

Source

paperswithcode, associated with the described research.

Collection Method

Data gathered using tunable laser-based Angle Resolved Photoemission Spectroscopy (ARPES).