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Related Experiment Video

Updated: Nov 10, 2025

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

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Published on: June 28, 2018

Spin-Polarized Tunable Photocurrents.

Matías Berdakin^1,2, Esteban A Rodríguez-Mena³, Luis E F Foa Torres³

¹INFIQC (CONICET-UNC), Ciudad Universitaria, Pabellón Argentina, 5000 Córdoba, Argentina.

|April 5, 2021

Summary

Researchers explored how laser light affects topological materials, discovering it can control spin-polarized edge states. This work paves the way for generating and manipulating spin photocurrents in novel topological devices.

Keywords:

Spin photocurrents Spin−orbit coupling Topological insulators Two-dimensional materials

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Last Updated: Nov 10, 2025

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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Published on: September 5, 2019

Area of Science:

Condensed Matter Physics
Materials Science
Quantum Optics

Background:

Topological materials offer unique properties for next-generation devices.
Controlling quantum phenomena like spin and topology is crucial for advanced electronics.

Purpose of the Study:

Investigate the interplay of laser illumination, spin, and topology in 2D materials.
Explore selective disruption of topological edge states using light polarization.
Demonstrate the generation of spin-polarized photocurrents.

Main Methods:

Utilized Floquet scattering theory.
Employed atomistic models for simulations.
Studied a 2D material with intrinsic spin-orbit coupling.

Main Results:

Laser illumination selectively disrupts spin-dependent topological edge states.
Pure spin photocurrents generated under linearly polarized light.
Spin-polarized charge photocurrents generated under circularly polarized light.

Conclusions:

Laser control over topological edge states is achievable.
Demonstrated a method for generating and controlling spin-polarized photocurrents.
Opens new avenues for topological spintronic devices.