Temperature-Dependent Polarized Raman Scattering in 2M-WS2

A collection of polarized Raman spectroscopy measurements on few-layer 2M-WS2, a candidate topological superconductor. The data investigates phonon properties as functions of laser power, temperature, polarization, and magnetic field down to 12.5 K. It reveals non-linear temperature dependence of Raman shifts and changes in polarization behavior of specific modes.

Use Cases

• Analyze the non-linear temperature dependence of Raman shifts for selected phonon modes to model electron-phonon coupling.
• Investigate the polarization behavior change of the A_g (4) mode at ~316 cm⁻¹ upon cooling to understand lattice and electronic anisotropy.
• Correlate Raman response with applied magnetic field across the measured temperature range to assess its influence on vibrational dynamics.
• Model phonon anharmonicity by examining Raman data as a function of laser power and temperature.

Strengths

• Data includes measurements down to 12.5 K, relevant for studying superconductivity with a critical temperature of ~8.8 K.
• Investigates multiple experimental parameters: laser power, temperature, polarization, and magnetic field.
• Focuses on a specific material system, few-layer 2M-WS2, a candidate topological superconductor.

Limitations

• The dataset size, row count, and specific file formats are unknown, limiting assessment of data volume and structure.
• Sample data and column definitions are unavailable, hindering immediate analysis without further metadata.
• Measurements are limited to a specific material (2M-WS2) and temperature range (down to 12.5 K), reducing generalizability.

Provenance

Source

Harvard Dataverse, authored by Sabin Gautam.

Collection Method

Data gathered via polarized Raman spectroscopy experiments.

Freshness

Last updated on 2026-01-26.