Direct observation of the electronic structure of even-layer puckered SnTe monolayer films on graphene

@misc{ichinokura2026direct,
  title = {{Direct observation of the electronic structure of even-layer puckered SnTe monolayer films on graphene}},
  author = {Satoru Ichinokura and Shunsuke Tsuda and Kiyohisa Tanaka and Koichiro Yaji},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.27672},
  eprint = {2609.27672},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.27672},
}

TY  - UNPB
TI  - Direct observation of the electronic structure of even-layer puckered SnTe monolayer films on graphene
AU  - Satoru Ichinokura
AU  - Shunsuke Tsuda
AU  - Kiyohisa Tanaka
AU  - Koichiro Yaji
PY  - 2026
DA  - 2026/09/23
PB  - arXiv
DO  - 10.48550/arxiv.2609.27672
UR  - https://arxiv.org/abs/2609.27672
AB  - We report a direct observation of the electronic structure of monolayer SnTe on graphene by angle-resolved photoemission spectroscopy. By combining low-energy electron diffraction, momentum microscopy, core-level spectroscopy, and first-principles calculations, we show that the observed monolayer-limit electronic structure is consistent with a puckered even-layer biatomic-layer building block rather than a nonpuckered square-flat structure. The observed band dispersion and its polarization dependence are reproduced by a puckered structure with a substrate-renormalized buckling amplitude. We further show that graphene actively interacts with ultrathin SnTe by selecting its in-plane orientational texture, renormalizing the buckling amplitude, and modifying the local interfacial electrostatic environment in the monolayer limit. In comparison, multilayer SnTe exhibits a more ringlike momentum-space distribution, interlayer-split valence bands, and a stronger p-type character, revealing the onset of thickness evolution from an interface-stabilized puckered ultrathin limit toward a more bulklike state.
ER  -