Researchers Can Now See Quantum Dots Inside Graphene

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Researchers Can Now See Quantum Dots Inside Graphene

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Researchers at UC Santa Cruz recently reported the primary direct visualization in bilayer graphene, showing the form of the quantum wave function of the trapped electrons, according to Graphene Info

This understanding of the nature of the quantum dot wave function in bilayer graphene is important in determining several features for quantum information processing, such as the interactions between electrons, coupling of electrons to their environment, and electron energy spectrums.

The UCSC team used a previously utilized method useful for creating quantum dots in monolayer graphene employing a scanning tunneling microscope (STM). Then, with the graphene resting on an insulating hexagonal boron nitride crystal, an oversized voltage added with the STM tip creates charges within the boron nitride that electrostatically confines electrons within the bilayer graphene.

This work provides important information needed to develop quantum devices based on this system, like the energy spectrum of the electrons.

Photo by ThisisEngineering RAEng on Unsplash

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