Carrier doping-induced strong magnetoelastic coupling in 2D lattice

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Achieving intertwined ferroelasticity and ferromagnetism in two-dimensional (2D) materials is crucial for nanoscale applications but remains challenging.
• Existing methods face limitations in realizing strong coupling between magnetic and elastic properties.

Purpose of the Study:

• To explore carrier doping as a novel approach to induce and control coupled ferromagnetism and ferroelasticity in 2D materials.
• To investigate the stability and properties of 2D β-PbO under carrier doping.

Main Methods:

• Computational modeling and simulation of 2D β-PbO.
• Analysis of dynamic, thermal, and mechanical stability.
• Investigation of electronic structure and magnetic properties under hole doping.

Main Results:

• Prototypical 2D β-PbO is confirmed to be dynamically, thermally, and mechanically stable.
• Hole doping induces simultaneous ferromagnetism and ferroelasticity in 2D β-PbO.
• The magnetic and ferroelastic orders are tunable via doping concentration, with an in-plane easy magnetization axis coupled to the lattice.

Conclusions:

• Carrier doping offers a viable route to realize strongly coupled ferromagnetism and ferroelasticity in 2D materials.
• 2D β-PbO exhibits tunable magnetoelastic, optical, and spin-splitting properties, paving the way for multifunctional devices.
• This work establishes a new paradigm for 2D magnetoelastic research.