Electronic topological transitions in cadmium under pressure studied via theoretical and experimental x-ray absorption spectroscopy
An electronic topological transition (ETT) in cadmium below 1 GPa is investigated in situ with experimental x-ray absorption spectroscopy and projecting calculated core-valence excitons onto the band structure. These projections are a useful application of the Bethe-Salpeter equation approach that considers many-body effects. The method described herein can be used for systems that are otherwise difficult to probe in situ; therefore, it provides a generalizable approach to identifying and understanding ETTs under high pressure. Although pressure-induced ETTs are often probed using indirect structural responses, our own x-ray diffraction and Raman studies suggest a second-order structural transition around 3 GPa but are largely insensitive to or inconclusive for the previously studied ETT in this region.
Authors
- Paul B. Ellison (ORCID: https://orcid.org/0000-0001-8852-9782)
- Jasmine K. Hinton (ORCID: https://orcid.org/0000-0003-4417-462X)
- Changyong Park (ORCID: https://orcid.org/0000-0002-3363-5788)
- Daniel Schacher (ORCID: https://orcid.org/0000-0002-4095-6635)
- Emily Siska (ORCID: https://orcid.org/0000-0002-2348-201X)
- G. Alexander Smith (ORCID: https://orcid.org/0000-0001-9701-1328)
- Ashkan Salamat (ORCID: https://orcid.org/0000-0001-6556-7532)
- Keith V. Lawler (ORCID: https://orcid.org/0000-0003-1087-5815)
- Scott K. Cushing (ORCID: https://orcid.org/0000-0003-3538-2259)
- Wonseok Lee (ORCID: https://orcid.org/0000-0003-1077-0511)
- Craig P. Schwartz (ORCID: https://orcid.org/0000-0002-4149-2684)
Institutions
- California Institute of Technology (US)
- Argonne National Laboratory (US)
- Oak Ridge National Laboratory (US)
- University of Nevada, Las Vegas (US)
- Los Alamos National Laboratory (US)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2024-11-07
- DOI
- https://doi.org/10.1103/physrevb.110.205118
- Citations
- 1
- Primary Topic
- High-pressure geophysics and materials
- Type
- article
- Field-Weighted Citation Impact
- 0.53
Funders
- National Science Foundation
- U.S. Department of Energy
- National Energy Research Scientific Computing Center
- Argonne National Laboratory
- Lawrence Berkeley National Laboratory
- Energy Frontier Research Centers