José Roberto de Toledo
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View article: Correlative Analysis of Iron-Driven Structural, Optical, and Magnetic Properties in Natural Biotite Crystals
Correlative Analysis of Iron-Driven Structural, Optical, and Magnetic Properties in Natural Biotite Crystals Open
Biotite crystals are phyllosilicate trioctahedral micas with the general chemical formula K(Mg,Fe)3AlSi3O10(OH)2 that form a solid-solution series with iron-poor phlogopite and iron-rich annite endmembers. With a wide band gap energy and a…
View article: Interplay of Energy and Charge Transfer in WSe<sub>2</sub>/CrSBr Heterostructures
Interplay of Energy and Charge Transfer in WSe<sub>2</sub>/CrSBr Heterostructures Open
van der Waals heterostructures (vdWHs) composed of transition-metal dichalcogenides (TMDs) and layered magnetic semiconductors offer great opportunities to manipulate the exciton and valley properties of TMDs. Here, we present magneto-phot…
View article: Chirality-driven dimensionality and broadband emission in lead bromide perovskites
Chirality-driven dimensionality and broadband emission in lead bromide perovskites Open
Racemic mixtures drive dimensionality and induce broadband emission in lead bromide perovskites. Temperature-dependent optical and structural studies reveal that exciton dynamics are related to octahedral distortions and hydration effects.
View article: Revealing localized excitons in WSe2/<i>β</i>-Ga2O3
Revealing localized excitons in WSe2/<i>β</i>-Ga2O3 Open
We have investigated the optical and magneto-optical properties of monolayer (ML) WSe2 on flakes of β-Ga2O3 under high magnetic fields. Remarkably, sharp emission peaks were observed and associated with localized excitons related to point …
View article: Radiation-induced defects in montebrasite: An electron paramagnetic resonance study of O – hole and Ti3+ electron centers
Radiation-induced defects in montebrasite: An electron paramagnetic resonance study of O – hole and Ti3+ electron centers Open
Montebrasite is a lithium aluminum phosphate mineral with the chemical formula LiAlPO4(Fx,OH1–x) and considered a rare gemstone material when exhibiting good crystallinity. In general, montebrasite is colorless, sometimes pale yellow or pa…
View article: Electron paramagnetic resonance signature of point defects in neutron-irradiated hexagonal boron nitride
Electron paramagnetic resonance signature of point defects in neutron-irradiated hexagonal boron nitride Open
© 2018 American Physical Society. Hexagonal boron nitride (h-BN) is an attractive van der Waals material for studying fluorescent defects due to its large band gap. In this work, we demonstrate enhanced pink color due to neutron irradiatio…
View article: Static and Dynamic Magnetization Investigation in Permalloy Electrodeposited onto High Resistive N-Type Silicon Substrates
Static and Dynamic Magnetization Investigation in Permalloy Electrodeposited onto High Resistive N-Type Silicon Substrates Open
The present study reports on the development of permalloy thin films obtained by electrodeposition onto low-doped n-type silicon substrates. While changing from non-percolated clusters into percolated thin films upon increasing the electro…