Quantum Building Blocks to Produce Exotic Electronic and Magnetic Properties

Quantum Constructing Blocks to Produce Unique Digital and Magnetic Properties

Quantum Building Blocks

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

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 technique might open the door to creating quantum constructing blocks that may work together to provide 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 habits, inducing desired properties within the graphene.

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

“If quite a lot of these quantum constructing blocks get collectively, they’ll 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 research 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

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