Nonlinear Fano-Raman line-shape evolution: direct evidence of the creation and annihilation of interferons in V <sub>2</sub> O <sub>5</sub>
A non-linear temperature-dependent Fano resonance in V<sub>2</sub>O<sub>5</sub> micro-crystallites is discovered, which also is found to be dictated by the laser flux. A Gaussian temperature-dependent Fano parameter is observed and explained through an interferon creation/annihilation mechanism from/to phonons which was found to be a thermodynamically favorable process. Systematic temperature- and power-dependent Raman studies explain the electron-phonon interaction in V<sub>2</sub>O<sub>5</sub> under resonant excitation. The non-linear dynamics of interferon (electron-phonon coupling state) formation with temperature are explained and an empirical relationship has been formulated to identify the temperature at which the interferon population is maximum, beyond which interferons get annihilated.
Authors
- Deb Kumar Rath (ORCID: https://orcid.org/0009-0007-4637-3194)
- Rajesh Kumar (ORCID: https://orcid.org/0000-0001-7977-986X)
- Subin Kaladi Chondath
- Bhumika Sahu (ORCID: https://orcid.org/0009-0000-6517-072X)
- Love Bansal (ORCID: https://orcid.org/0000-0003-1799-8260)
- Nikita Ahlawat (ORCID: https://orcid.org/0009-0009-1844-9803)
- Kuldeep Barwa
Institutions
- Indian Institute of Technology Indore (IN)
Publication Details
- Journal
- Physical Chemistry Chemical Physics
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cp00176e
- Citations
- 1
- Primary Topic
- Organic and Molecular Conductors Research
- Type
- article
- Field-Weighted Citation Impact
- 0.43