Critical slowing of the spin and charge density wave order in thin film Cr following photoexcitation
| Title: | Critical slowing of the spin and charge density wave order in thin film Cr following photoexcitation |
|---|---|
| Authors: | Sheena K. K. Patel; Oleg Yu Gorobtsov; Devin Cela; Stjepan B. Hrkac; Nelson Hua; Rajasekhar Medapalli; Anatoly G. Shabalin; James Wingert; James M. Glownia; Diling Zhu; Matthieu Chollet; Oleg G. Shpyrko; Andrej Singer; Eric E. Fullerton |
| Source: | APL Materials, Vol 12, Iss 6, Pp 061111-061111-8 (2024) |
| Publisher Information: | AIP Publishing LLC |
| Publication Year: | 2024 |
| Collection: | Directory of Open Access Journals: DOAJ Articles |
| Subject Terms: | Biotechnology; TP248.13-248.65; Physics; QC1-999 |
| Description: | We report on the evolution of the charge density wave (CDW) and spin density wave (SDW) orders of a chromium film following photoexcitation with an ultrafast optical laser pulse. The CDW is measured by ultrafast time-resolved x-ray diffraction of the CDW satellite that tracks the suppression and recovery of the CDW following photoexcitation. We find that as the temperature of the film approaches a discontinuous phase transition in the CDW and SDW orders, the time scales of recovery increase exponentially from the expected thermal time scales. We extend a Landau model for SDW systems to account for this critical slowing with the appropriate boundary conditions imposed by the geometry of the thin film system. This model allows us to assess the energy barrier between the available CDW/SDW states with different spatial periodicities. |
| Document Type: | article in journal/newspaper |
| Language: | English |
| Relation: | http://dx.doi.org/10.1063/5.0206207; https://doaj.org/toc/2166-532X; https://doaj.org/article/5fa059c08bcb4ae79b8df12ada34fd6c |
| DOI: | 10.1063/5.0206207 |
| Availability: | https://doi.org/10.1063/5.0206207; https://doaj.org/article/5fa059c08bcb4ae79b8df12ada34fd6c |
| Accession Number: | edsbas.DBA236F1 |
| Database: | BASE |