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Artificial relativistic molecules.


ABSTRACT: We fabricate artificial molecules composed of heavy atom lead on a van der Waals crystal. Pb atoms templated on a honeycomb charge-order superstructure of IrTe2 form clusters ranging from dimers to heptamers including benzene-shaped ring hexamers. Tunneling spectroscopy and electronic structure calculations reveal the formation of unusual relativistic molecular orbitals within the clusters. The spin-orbit coupling is essential both in forming such Dirac electronic states and stabilizing the artificial molecules by reducing the adatom-substrate interaction. Lead atoms are found to be ideally suited for a maximized relativistic effect. This work initiates the use of novel two-dimensional orderings to guide the fabrication of artificial molecules of unprecedented properties.

SUBMITTER: Park JW 

PROVIDER: S-EPMC7010783 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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Artificial relativistic molecules.

Park Jae Whan JW   Kim Hyo Sung HS   Brumme Thomas T   Heine Thomas T   Yeom Han Woong HW  

Nature communications 20200210 1


We fabricate artificial molecules composed of heavy atom lead on a van der Waals crystal. Pb atoms templated on a honeycomb charge-order superstructure of IrTe<sub>2</sub> form clusters ranging from dimers to heptamers including benzene-shaped ring hexamers. Tunneling spectroscopy and electronic structure calculations reveal the formation of unusual relativistic molecular orbitals within the clusters. The spin-orbit coupling is essential both in forming such Dirac electronic states and stabilizi  ...[more]

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