https://flatland-pi.vercel.app/materials/bitex.html The newest items tagged BiTeX in the Flatland news feed. en Mon, 05 Oct 2026 08:10:53 GMT https://arxiv.org/abs/2607.26311v2 https://arxiv.org/abs/2607.26311v2 Tue, 28 Jul 2026 22:14:45 GMT arXiv: Bulk-Rashba spin splitting is forbidden in tetradymite topological insulators like Bi₂Se₃ or Bi₂Te₃, since their quintuple-layer stacking preserves inversion symmetry. We show that BiSbTeSe₂ escapes this restriction: in the Se-Bi-Se-Sb-Te sequence, the structure loses its inversion center, reducing the point group… Theory Bi₂Se₃, Bi₂Te₃ BiTeX https://arxiv.org/abs/2606.13015v2 https://arxiv.org/abs/2606.13015v2 Thu, 11 Jun 2026 07:52:07 GMT arXiv: Twisted van der Waals bilayers provide a versatile platform for moiré electronic states, yet a transferable symmetry-based principle for time-reversal-invariant Z₂ moiré bands has remained largely missing. Here we show that triangular-lattice bilayers with symmetry-related stacking minima provide a geometric route to… Theory BiTeX https://arxiv.org/abs/2601.11167v1 https://arxiv.org/abs/2601.11167v1 Fri, 16 Jan 2026 10:36:17 GMT arXiv: Two-dimensional Janus structures have garnered rapidly growing attention across multidisciplinary fields. However, despite extensive theoretical and experimental efforts, a principle for designing intrinsic Janus materials remains elusive. Here, we propose a first-principles alloy theory based on cluster expansion… Theory Janus MoSSe RhSeCl, RhTeCl BiTeX https://arxiv.org/abs/2601.00195v1 https://arxiv.org/abs/2601.00195v1 Thu, 01 Jan 2026 04:04:34 GMT arXiv: The BiTeX family of polar van der Waals (vdW) semiconductors offers a unique platform for exploring the interplay between polar crystalline structure and nonlinear optical phenomena. Here, we utilize second harmonic generation (SHG) polarimetry to demonstrate giant anisotropic optical nonlinearities in BiTeBr and BiTeI… Experiment BiTeX