guest ::
| Home > Publications database > Quasiparticle interference on the surface of Bi 2 Se 3 -terminated (PbSe) 5 ( Bi 2 Se 3 ) 6 |
| Home > Publications database > Quasiparticle interference on the surface of Bi 2 Se 3 -terminated (PbSe) 5 ( Bi 2 Se 3 ) 6 |
| Journal Article | FZJ-2025-03066 |
; ; ; ; ;
2025
Inst.
Woodbury, NY
This record in other databases:
Please use a persistent id in citations: doi:10.1103/h8v9-sl53 doi:10.34734/FZJ-2025-03066
Abstract: Among the family of topological superconductors derived from Bi 2 Se 3 , Cux (PbSe) 5 (Bi 2 Se 3 ) 6 is unique in its surface termination of a single quintuple layer (QL) of the topological insulator (TI) Bi 2 Se 3 on an ordinaryinsulator PbSe. Here, we report a combined scanning tunneling microscopy (STM) and density functional theory (DFT) characterization of the cleaved surface of the parent compound (PbSe)5 (Bi 2 Se 3 ) 6 (PSBS). Interestingly,the potential disorder due to the random distribution of native defects is only ∼ 4 meV, comparable to the smallest reported for TIs. Performing high-resolution quasiparticle interference imaging (QPI) near the Fermienergy (E − EF = −1 to 0.6 eV) we reconstruct the dispersion relation of the dominant spectral feature and our ab initio calculations show that this surface feature originates from two bands with Rashba-like splitting dueto strong spin-orbit coupling and inversion symmetry breaking. Moreover, only a small hexagonal distortion of the calculated Fermi surface is seen in the full momentum space distribution of the measured scattering data.Nevertheless, the scattering pattern at lower energies transforms into a flowerlike shape with suppressed intensity along the K direction. We show that this effect is not due to the forbidden backscattering in the spin-momentumlocked surface state in Bi 2 Se 3 but reflects the threefold symmetry of the scattering potential.
; 
; 
; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection
|
The record appears in these collections: |
PDF