Enhancing plasmonic superconductivity in layered materials via dynamical Coulomb engineering.

Area of Science:

• Condensed Matter Physics
• Materials Science
• Quantum Materials

Background:

• Atomically thin van der Waals materials possess tunable correlation properties via static Coulomb screening.
• Understanding and controlling many-body properties in these materials is crucial for developing novel electronic devices.
• Plasmon-mediated superconductivity is a promising area for achieving high critical temperatures.

Purpose of the Study:

• To introduce tunable dynamical screening as a novel method for optimizing many-body properties.
• To investigate the enhancement of plasmon-induced superconducting critical temperatures in layered superconductors.
• To determine the optimal screening environment for maximizing critical temperatures.

Main Methods:

• Development and application of tunable dynamical screening, termed 'bosonic engineering'.
• Analysis of plasmon modes and their hybridization in layered superconductors within metallic environments.
• Theoretical determination of optimal screening parameters to maximize superconducting critical temperatures.

Main Results:

• Bosonic engineering enhances plasmon-induced superconducting critical temperatures by up to an order of magnitude.
• Formation of interlayer hybridized plasmon modes leads to enhanced superconducting pairing strength.
• Identification of optimal screening environment properties for maximizing critical temperatures.

Conclusions:

• Tunable dynamical screening offers a powerful route to engineer bosonic modes and optimize many-body properties.
• Bosonic engineering significantly boosts superconducting critical temperatures in layered superconductors.
• This approach provides a pathway for experimental verification of plasmon-mediated superconductivity.