% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Bagchi:1044177,
      author       = {Bagchi, Mahasweta and Rüssmann, Philipp and Bihlmayer,
                      Gustav and Blügel, Stefan and Ando, Yoichi and Brede, Jens},
      title        = {{Q}uasiparticle interference on the surface of {B}i 2 {S}e
                      3 -terminated ({P}b{S}e) 5 ( {B}i 2 {S}e 3 ) 6},
      journal      = {Physical review / B},
      volume       = {112},
      number       = {4},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2025-03066},
      pages        = {045411},
      year         = {2025},
      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.},
      cin          = {PGI-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-1-20110106},
      pnm          = {5211 - Topological Matter (POF4-521)},
      pid          = {G:(DE-HGF)POF4-5211},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001539380900006},
      doi          = {10.1103/h8v9-sl53},
      url          = {https://juser.fz-juelich.de/record/1044177},
}