Hypergiant spin polarons photogenerated in ferromagnetic europium chalcogenides
نویسندگان
چکیده
منابع مشابه
Dynamics of photogenerated polarons in conjugated polymers.
Within a tight-binding electron-phonon interacting model, we investigate the dynamics of photoexcitations to address the generation mechanism of charged polarons in conjugated polymers by using a nonadiabatic evolution method. Besides the neutral polaron exciton which is well known, we identify a novel product of lattice dynamic relaxation from the photoexcited states in a few hundreds of femto...
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Despite their pronounced importance for oxide-based photochemistry, optoelectronics and photovoltaics, only fairly little is known about the polaron lifetimes and binding energies. Polarons represent a crucial intermediate step populated immediately after dissociation of the excitons formed in the primary photoabsorption process. Here we present a novel approach to studying photoexcited polaron...
متن کاملRaman Scattering Studies of Spin Order and Fluctuations in the Europium Chalcogenides
Magnetic phase dependent, inelastic light scattering from phonons in the europium chalcogenides is reviewed with an emphasis on the behavior of the spectra near magnetic phase transitions. As a result of the one phonon-one spin Raman scattering mechanism which gives rise to these spectra, both broad (Av % 30 cm) and sharp (Av 5 l cm) first-order Raman lines are observed. The calculated temperat...
متن کاملCorrigendum: evidence for photogenerated intermediate hole polarons in ZnO.
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متن کاملV. Magnetic Excitationsraman Scattering Studies of Spin Order and Fluctuations in the Europium Chalcogenides
Magnetic phase dependent, inelastic light scattering from phonons in the europium chalcogenides is reviewed with an emphasis on the behavior of the spectra near magnetic phase transitions. As a result of the one phonon-one spin Raman scattering mechanism which gives rise to these spectra, both broad (Av % 30 cm) and sharp (Av 5 l cm) first-order Raman lines are observed. The calculated temperat...
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2020
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.5143311