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Nonvolatile Ferroic and Topological Phase Control under Nonresonant Light.

Jian Zhou, Hanli Cui¹

¹Center for Alloy Innovation and Design, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China.

The Journal of Physical Chemistry Letters

|December 24, 2024

Summary

Non-absorptive light can switch material properties by altering the real part of the dielectric function. This perspective reviews low-frequency light-induced phase transitions in ferroic and topological materials.

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Area of Science:

Condensed matter physics
Materials science
Optics

Background:

Light-matter interactions have a long history, evolving from debates on light's nature to its use in characterizing materials.
Traditionally, light's role in materials science involves absorption (imaginary dielectric function) to excite electrons.
Modulating intrinsic material properties like atomic geometry and electronic bands via light offers intriguing possibilities for information control.

Purpose of the Study:

To review recent theoretical, computational, and experimental advancements in low-frequency light-induced phase transitions.
To focus on the role of the real part of the dielectric function in triggering these transitions athermally.
To explore applications in ferroic and topological order parameters.

Main Methods:

Review of theoretical predictions and experimental findings.
Computational analysis of light-matter interactions.
Comparison with optical tweezers and impulsive stimulated Raman phonon excitation.

Main Results:

The real part of the dielectric function can induce phase transitions without direct photon absorption.
Low-frequency light can trigger phase transitions in ferroic and topological materials.
Mechanisms involve nonresonant light-matter interactions, distinct from traditional absorption-based phenomena.

Conclusions:

Nonresonant light-matter interactions offer a novel pathway for controlling material phases.
Further research is needed to fully understand and exploit these phenomena.
Potential for future developments in information control and storage using light-induced phase transitions.