Antibonding Ground state of Adatom Molecules in Bulk Dirac Semimetals

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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Cited by in corpus (5)

• Majorana molecules and their spectral fingerprints
• Chiral magnetic chemical bonds in molecular states of impurities in Weyl semimetals
• Atomic frustrated impurity states in Weyl metals
• Resonant electron tunneling spectroscopy of antibonding states in a Dirac semimetal
• Atomic frustration-based twistronics