Antibonding ground state of adatom molecules in bulk Dirac semimetals

作者:Marques Y; Obispo A E; Ricco L S; de Souza M; Shelykh I A; Seridonio A C
来源:PHYSICAL REVIEW B, 2017, 96(4): 041112.
DOI:10.1103/PhysRevB.96.041112

摘要

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.

  • 出版日期2017-7-11
  • 单位Univ Estadual Paulista