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arXiv · 1705.09216

Antibonding Ground state of Adatom Molecules in Bulk Dirac Semimetals

Y. Marques·A. E. Obispo·L. S. Ricco·M. de Souza·I. A. Shelykh·A. C. Seridonio
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Abstract

The ground state of the diatomic molecules in nature is inevitably bonding, and its first excited state is antibonding. We demonstrate theoretically that, for a pair of distant adatoms placed buried in three-dimensional-Dirac semimetals, this natural order of the states can be reversed and an antibonding ground state occurs at the lowest energy of the so-called bound states in the continuum. We propose an experimental protocol with the use of a scanning tunneling microscope tip to visualize the topographic map of the local density of states on the surface of the system to reveal the emerging physics.

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Y. Marques, A. E. Obispo, L. S. Ricco, M. de Souza, I. A. Shelykh, A. C. Seridonio. 2017-05-25. Antibonding Ground state of Adatom Molecules in Bulk Dirac Semimetals. https://doi.org/10.1103/physrevb.96.041112

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