• DOI:10.1038/s41535-021-00398-3
• Corpus ID: 235899111

Unveiling the orbital texture of 1T-TiTe2 using intrinsic linear dichroism in multidimensional photoemission spectroscopy

@article{Beaulieu2021UnveilingTO,
  title={Unveiling the orbital texture of 1T-TiTe2 using intrinsic linear dichroism in multidimensional photoemission spectroscopy},
  author={Samuel Beaulieu and Michael Schuler and Jakub Schusser and Shuo Dong and Tommaso Pincelli and Julian Maklar and Alexander Neef and Friedrich Reinert and Martin Wolf and Laurenz Rettig and Jan Min'ar and Ralph Ernstorfer},
  journal={npj Quantum Materials},
  year={2021},
  volume={6},
  pages={1-11}
}

• S. Beaulieu, M. Schuler, +9 authors R. Ernstorfer
• Published 15 July 2021
• Physics
• npj Quantum Materials

The momentum-dependent orbital character in crystalline solids, referred to as orbital texture, is of capital importance in the emergence of symmetry-broken collective phases, such as charge density waves as well as superconducting and topological states of matter. By performing extreme ultraviolet multidimensional angle-resolved photoemission spectroscopy for two different crystal orientations linked to each other by mirror symmetry, we isolate and identify the role of orbital texture in photoemission from the transition metal dichalcogenide 1T-TiTe 2 . By comparing our experimental results with theoretical calculations based on both a quantitative one-step model of photoemission and an intuitive tight-binding model, we unambiguously demonstrate the link between the momentum-dependent orbital orientation and the emergence of strong intrinsic linear dichroism in the photoelectron angular distributions. Our results represent an important step towards going beyond band structure (eigenvalues) mapping and learning about electronic wavefunction and orbital texture of solids by exploiting matrix element effects in photoemission spectroscopy.