# Floquet analysis of excitations in materials

@article{Giovannini2019FloquetAO, title={Floquet analysis of excitations in materials}, author={Umberto De Giovannini and Hannes H{\"u}bener}, journal={Journal of Physics: Materials}, year={2019}, volume={3} }

Controlled excitation of materials can transiently induce changed or novel properties with many fundamental and technological implications. Especially, the concept of Floquet engineering and the manipulation of the electronic structure via dressing with external lasers have attracted some recent interest. Here we review the progress made in defining Floquet material properties and give a special focus on their signatures in experimental observables as well as considering recent experiments…

## 46 Citations

### Floquet engineering the band structure of materials with optimal control theory

- PhysicsPhysical Review Research
- 2022

We demonstrate that the electronic structure of a material can be deformed into Floquet pseudobands with arbitrarily tailored shapes. We achieve this goal with a combination of quantum optimal…

### Exciton-coherence generation through diabatic and adiabatic dynamics of Floquet state

- Physics
- 2022

Floquet engineering of electronic systems is a promising way of controlling quantum material properties on an ultrafast time scale. So far, the energy structure of Floquet states in solids has been…

### Moir\'e-Floquet engineering of quantum materials: a review

- Physics
- 2020

We review recent work on quantum materials driven by light, emphasizing van der Waals systems hosting Moire superlattices. These non-equilibrium systems combine the twist-angle sensitivity of the…

### Coherent dynamics of Floquet-Bloch states in monolayer WS2 reveals fast adiabatic switching

- PhysicsPhysical Review B
- 2021

Floquet engineering offers a path to optically-controlled materials, but experimental implementations have frequently relied on femtosecond pulses to achieve the high peak fields required to maximise…

### A thermodynamic probe of the topological phase transition in epitaxial graphene based Floquet topological insulator

- PhysicsJournal of Applied Physics
- 2021

One can use light to tune certain materials, from a trivial to a topological phase. A prime example of such materials, classified as Floquet topological insulators (FTI), is epitaxial graphene. In…

### A thermodynamic probe of the topological phase transition in a Floquet topological insulator

- Physics
- 2020

In certain materials light can be used to tune the material from a trivial phase to a topological phase. These materials are classified as Floquet topological insulator (FTI). In this paper, we probe…

### Ultrafast investigation and control of Dirac and Weyl semimetals

- Physics
- 2021

Ultrafast experiments using sub-picosecond pulses of light are poised to play an important role in the study and use of topological materials and, particularly, of the three-dimensional Dirac and…

### Light-induced emergent phenomena in 2D materials and topological materials

- PhysicsNature Reviews Physics
- 2021

Light–matter interaction in 2D and topological materials provides a fascinating control knob for inducing emergent, non-equilibrium properties and achieving new functionalities in the ultrafast…

### Electron-phonon coupling induced intrinsic Floquet electronic structure

- Physicsnpj Quantum Materials
- 2020

Floquet states are a topic of intense contemporary interest, which is often induced by coherent external oscillating perturbation (e.g., laser, or microwave) which breaks the continuous time…

## References

SHOWING 1-10 OF 113 REFERENCES

### Floquet Engineering of Quantum Materials

- PhysicsAnnual Review of Condensed Matter Physics
- 2019

Floquet engineering, the control of quantum systems using periodic driving, is an old concept in condensed matter physics dating back to ideas such as the inverse Faraday effect. However, there is a…

### Modulated Floquet topological insulators.

- PhysicsPhysical review letters
- 2013

It is demonstrated that spatial modulation of light allows for remarkable control of the properties in these systems and a close analogy to p-wave superconductors is used to explain the results.

### Optically engineering the topological properties of a spin Hall insulator.

- PhysicsPhysical review letters
- 2012

Time-periodic perturbations can be used to engineer topological properties of matter by altering the Floquet band structure and the connection with Thouless' charge pumping and nonequilibrium zitterbewegung is discussed, together with possible experiments.

### An optically stimulated superconducting-like phase in K3C60 far above equilibrium Tc

- Physics
- 2015

The control of non-equilibrium phenomena in complex solids is an important research frontier, encompassing new effects like light induced superconductivity. Here, we show that coherent optical…

### Floquet topological insulator in semiconductor quantum wells

- Physics
- 2011

Topological phases of matter have captured our imagination over the past few years, with tantalizing properties such as robust edge modes and exotic non-Abelian excitations, and potential…

### Theory of Floquet band formation and local pseudospin textures in pump-probe photoemission of graphene.

- PhysicsNature communications
- 2015

It is predicted that short optical pulses attainable in experiments can lead to local spectral gaps and novel pseudospin textures in graphene by identifying new states with optically induced nontrivial changes of sublattice mixing that leads to Berry curvature corrections of electrical transport and magnetization.

### Towards properties on demand in quantum materials.

- PhysicsNature materials
- 2017

Emerging strategies for selectively perturbing microscopic interaction parameters are described, which can be used to transform materials into a desired quantum state and outline a potential roadmap to an era of quantum phenomena on demand.

### Creating stable Floquet–Weyl semimetals by laser-driving of 3D Dirac materials

- PhysicsNature communications
- 2017

It is shown by first principles calculations how femtosecond laser pulses with circularly polarized light can be used to switch between WeylSemimetal, Dirac semimetal and topological insulator states in a prototypical three-dimensional Dirac material, Na3Bi.

### Topological Floquet-Thouless Energy Pump.

- PhysicsPhysical review letters
- 2018

We explore adiabatic pumping in the presence of a periodic drive, finding a new phase in which the topologically quantized pumped quantity is energy rather than charge. The topological invariant is…

### Photoinduced transition between conventional and topological insulators in two-dimensional electronic systems.

- PhysicsPhysical review letters
- 2010

It is shown how the electron system can be tuned through phases associated with different Chern numbers as the laser intensity is adiabatically swept, i.e., a photoinduced analog of the quantum Hall plateau transition.