| Full text | |
| Author(s): |
van Kooten, S. C. P.
;
Springholz, G.
;
Henriques, A. B.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW B; v. 105, n. 22, p. 5-pg., 2022-06-29. |
| Abstract | |
We uncovered the spin dynamics involved in the birth and growth of giant spin polarons in a magnetic semiconductor. For this purpose, we developed a measurement technique which provides direct access to the spin dynamics, irrespective of phonons and carriers involved in the process. Moreover, we solved the Landau-Lifshitz equation in the specific scenario of spin polarons; this solution fits our data excellently and demonstrates that the spin polaron growth slows down dramatically when the sample is cooled in the paramagnetic phase. Finally, temperature-dependent Monte Carlo simulations were performed; these are in excellent agreement with the observed slowdown, which demonstrates that fluctuations in the Weiss field play a decisive role in spin coherence generation induced by light in magnetic materials. (AU) | |
| FAPESP's process: | 20/15570-0 - Spin coherence through light in magnetic semiconductors |
| Grantee: | Andre Bohomoletz Henriques |
| Support Opportunities: | Regular Research Grants |