Science Daily August 15, 2023 Graphene nanoribbons synthesized using bottom-up approaches can be structured with atomic precision, allowing their physical properties to be precisely controlled. For applications in quantum technology, the manipulation of single charges, spins or photons is required. However, achieving this at the level of single graphene nanoribbons is experimentally challenging due to the difficulty of contacting individual nanoribbons, particularly on-surface synthesized ones. An international team of researchers (Switzerland, UK, Germany, China) has attached electrodes to individual atomically precise nanoribbons paving the way for precise characterization of the ribbons and their possible use in quantum technology. The approach […]
Tag Archives: Nanoribbons
Scientists construct novel quantum testbed one atom at a time
Phys.org November 29, 2022 A team of researchers in the US (Argonne National Laboratory, Old Dominion University) synthesized artificial graphene nanoribbons by positioning carbon monoxide molecules on a copper surface to confine its surface state electrons into artificial atoms positioned to emulate the low-energy electronic structure of graphene derivatives. They showed that the dimensionality of artificial graphene can be reduced to one dimension with proper “edge” passivation, with the emergence of an effectively gapped one-dimensional nanoribbon structure which showed evidence of topological effects analogous to graphene nanoribbons. They spatially explored robust, zero-dimensional topological states by altering the topological invariants of […]