@Article{GratensOuMooRapHen:2020:HySpPo,
               author = "Gratens, Xavier and Ou, Yunbo and Mooderan, Jagadeesh S. and 
                         Rappl, Paulo Henrique de Oliveira and Henriques, Andr{\'e} B.",
          affiliation = "{Universidade de S{\~a}o Paulo (USP)} and {Massachusetts 
                         Institute of Technology} and {Massachusetts Institute of 
                         Technology} and {Instituto Nacional de Pesquisas Espaciais (INPE)} 
                         and {Universidade de S{\~a}o Paulo (USP)}",
                title = "Hypergiant spin polarons photogenerated in ferromagnetic europium 
                         chalcogenides",
              journal = "Applied Physics Letters",
                 year = "2020",
               volume = "116",
               number = "15",
                pages = "e152402",
                month = "Apr.",
             abstract = "We find that in the ferromagnetic semiconductor EuS, near its 
                         Curie temperature, a single band edge photon generates a spin 
                         polaron (SP), whose magnetic moment approaches 20 000 Bohr 
                         magnetons. This is much larger than the supergiant photoinduced 
                         SPs in antiferromagnetic europium chalcogenides, reported 
                         previously. The larger SP in ferromagnetic EuS, and still larger 
                         expected for EuO, is explained by a larger Bohr radius of the 
                         photoexcited electron state, which encircles and polarizes a 
                         greater number of lattice spins. However, because the wave 
                         function of the photoexcited electron spreads over a greater 
                         volume, the photoexcited electrons exchange interaction with 
                         individual lattice spins weakens, which makes the SP more easily 
                         quenched thermally.",
                  doi = "10.1063/1.5143311",
                  url = "http://dx.doi.org/10.1063/1.5143311",
                 issn = "0003-6951",
             language = "en",
        urlaccessdate = "2024, May 05"
}