Quantum Building Blocks

Transition metals stitched into graphene with an electron beam kind promising quantum constructing blocks. Credit score: Ondrej Dyck, Andrew Lupini and Jacob Swett/ORNL, U.S. Dept. of Vitality

Oak Ridge Nationwide Laboratory scientists demonstrated that an electron microscope can be utilized to selectively take away carbon atoms from graphene’s atomically skinny lattice and sew transition-metal dopant atoms of their place.

This methodology might open the door to creating quantum constructing blocks that may work together to supply unique digital, magnetic and topological properties.

That is the primary precision positioning of transition-metal dopants in graphene. The produced graphene-dopant complexes can exhibit atomic-like conduct, inducing desired properties within the graphene.

“What might you construct for those who might put any atoms precisely the place you need? Absolutely anything,” ORNL’s Ondrej Dyck mentioned. He co-led the examine with Stephen Jesse at ORNL’s Middle for Nanophase Supplies Sciences.

“If numerous these quantum constructing blocks get collectively, they will begin to act in a correlated method, which is when actually thrilling properties start to emerge,” Jesse mentioned. The scientists plan to make arrays of interacting quantum constructing blocks to analyze emergent properties.

Reference: “Doping transition-metal atoms in graphene for atomic-scale tailoring of digital, magnetic, and quantum topological properties” by Ondrej Dyck, Lizhi Zhang, Mina Yoon, Jacob L. Swett, Dale Hensley, Cheng Zhang, Philip D. Rack, Jason D. Fowlkes, Andrew R. Lupini and Stephen Jesse, 7 November 2020, Carbon.
DOI: 10.1016/j.carbon.2020.11.015

By Rana

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