Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-12-26
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 4 figures
Scientific paper
We studied the Ag-intercalated 3D topological insulator Bi$_{2}$Se$_{3}$ by scanning tunneling microscopy/spectroscopy and angle-resolved photoemission spectroscopy, combined with a first principles calculations. We demonstrate that silver atoms deposited on the surface of Bi$_{2}$Se$_{3}$ are intercalated between the quintuple layer (QL) units of the crystal, causing a expansion of the van der Waals gaps and the detachment of topmost QLs from the bulk crystal. This leads to a relocation (in the real space) of the the topological state beneath the detached quintuple layers, accompanied by the emergence of parabolic and "M-shaped" trivial bands localized above the relocated topological states. These novel findings open a pathway to the engineering of Dirac fermions shielded from the ambient contamination and may facilitate the realization of fault-tolerant quantum devices.
Arita Masanori
Chulkov Evgueni V.
Eremeev Sergey V.
Kim Seongcheol
Kimura Akio
No associations
LandOfFree
Relocation of the topological surface state of Bi$_{2}$Se$_{3}$ beneath the surface by Ag intercalation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Relocation of the topological surface state of Bi$_{2}$Se$_{3}$ beneath the surface by Ag intercalation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Relocation of the topological surface state of Bi$_{2}$Se$_{3}$ beneath the surface by Ag intercalation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-253141