Physicists Visualize Quantum Electron Transitions in Graphene
The 2026 study demonstrates a method to control electron tunneling using light, potentially enabling faster semiconductor devices.
Updated on Oct. 28, 2026 in Physics
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Researchers have visualized ultrafast Landau-Zener-Majorana transitions in graphene by combining laser technology with photoemission momentum microscopy. Published in Nature in 2026, this study documents electrons jumping across energy bands within atomically thin carbon layers.
Why it matters
Understanding these quantum mechanical transitions is critical for advancing the control of electron movement in next-generation semiconductor electronics. This research provides a new methodology for manipulating the electronic properties of quantum materials using light.
The experiment achieved a tunneling probability of up to 100% for electrons crossing the energy band gap. This performance was measured using a photoemission momentum microscope to track electron energies and states of motion in high-purity, rotated graphene samples.
The players
Nature
A leading international scientific journal that publishes peer-reviewed research across all fields of science and technology.
The details
Landau-Zener-Majorana transitions describe electrons jumping between energy bands when subjected to external fields. To observe this, researchers used strong, fast-oscillating light fields to set electrons in motion, while the photoemission momentum microscope recorded the resulting energy states. Interactions with the graphene crystal lattice—the repeating internal arrangement of atoms—serve to disrupt the movement of these particles.
Timeline
2026: The study was published in the journal Nature.
The Tech Race
This work advances the broader effort to move beyond silicon-based transistors by manipulating quantum states with light. It follows previous benchmarks in quantum materials research for semiconductor electronics, offering a more granular look at electron control.
This methodology is currently confined to research laboratories and has no immediate effect on consumer electronics. Future applications may eventually lead to faster, more efficient semiconductor components based on light-controlled quantum states.
The takeaway
Researchers have successfully demonstrated precise control over electron tunneling, marking a significant step toward light-based transistor architectures. Watch for subsequent studies applying this photoemission microscopy technique to other exotic 2D materials to see if these high tunneling rates persist.
Further reading
Explore more breakthroughs in Physics regarding the fundamental behavior of matter.
More information
View the complete Nature research study article for detailed methodology and findings.
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