Topological phase transitions via attosecond x-ray absorption spectroscopy
We present a numerical experiment that demonstrates the possibility to capture topological phase transitions via an x-ray absorption spectroscopy scheme. We consider a Chern insulator whose topological phase is tuned via a second-order hopping. We perform time-dynamics simulations of the out-of-equilibrium laser-driven electron motion that enables us to model a realistic attosecond spectroscopy scheme. In particular, we use an ultrafast scheme with a circularly polarized IR pump pulse and an attosecond x-ray probe pulse. A laser-induced dichroism-type spectrum shows a clear signature of the topological phase transition. We are able to connect these signatures with the Berry structure of the system. This work extend the applications of attosecond absorption spectroscopy to systems presenting a non-trivial topological phase.
Authors
- Antonio Picón (ORCID: https://orcid.org/0000-0002-6142-3440)
- Mikhail Malakhov (ORCID: https://orcid.org/0000-0003-2910-2003)
- Maciej Lewenstein (ORCID: https://orcid.org/0000-0002-0210-7800)
- Emilio Pisanty (ORCID: https://orcid.org/0000-0003-0598-8524)
- Alexandre Dauphin (ORCID: https://orcid.org/0000-0003-4996-2561)
- Giovanni Cistaro (ORCID: https://orcid.org/0000-0002-5340-9200)
- Alexis Chacón (ORCID: https://orcid.org/0000-0002-9279-4463)
- Luis Plaja (ORCID: https://orcid.org/0000-0001-8709-7295)
- Juan F. P. Mosquera
Institutions
- Universidad de Panamá (PA)
- Institució Catalana de Recerca i Estudis Avançats (ES)
- Universidad Autónoma de Chiriquí (PA)
- Institute of Photonic Sciences (ES)
- King's College London (GB)
- Universidad de Salamanca (ES)
- M.N. Mikheev Institute of Metal Physics (RU)
- Secretaría Nacional de Ciencia, Tecnología e Innovación (PA)
- City of Knowledge (PA)
- Universidad Autónoma de Madrid (ES)
Publication Details
- Journal
- Reports on Progress in Physics
- Published
- 2024-10-18
- DOI
- https://doi.org/10.1088/1361-6633/ad889f
- Citations
- 3
- Primary Topic
- Topological Materials and Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 1.01
Funders
- Comunidad de Madrid
- Ministerio de Ciencia, Innovación y Universidades
- Institut de Ciències Fotòniques
- Royal Society
- European Commission
- European Cooperation in Science and Technology
- Universidad Autónoma de Madrid
- Barcelona Supercomputing Center
- Universidad de Zaragoza
- Ministry of Science and Higher Education of the Russian Federation
- QuantERA
- Agencia Estatal de Investigación