Detecting the spread of valence-band Wannier functions by optical sum rules
For three-dimensional semiconductors and insulators, the authors elaborate here that the imaginary part of dielectric function integrated over frequency gives the spread of valence-band Wannier functions, which characterizes how insulating is the material. For two-dimensional materials, their opacity divided by frequency and then integrated over frequency does the same job.
Authors
- Denis Kochan (ORCID: https://orcid.org/0000-0003-0613-5996)
- Shuai Zhang (ORCID: https://orcid.org/0009-0003-9902-022X)
- Luis F. Cárdenas-Castillo (ORCID: https://orcid.org/0000-0002-4144-9221)
- F.L. Freire (ORCID: https://orcid.org/0000-0002-4067-2878)
- Wei Chen (ORCID: https://orcid.org/0000-0002-8866-0614)
Institutions
- Slovak Academy of Sciences (SK)
- Pontifícia Universidade Católica do Rio de Janeiro (BR)
- Institute of Physics of the Slovak Academy of Sciences (SK)
- National Cheng Kung University (TW)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2024-08-20
- DOI
- https://doi.org/10.1103/physrevb.110.075203
- Citations
- 10
- Primary Topic
- Topological Materials and Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 3.38
Funders
- Slovenská Akadémia Vied
- Conselho Nacional de Desenvolvimento Científico e Tecnológico