1. Manipulation of the magneto-optical properties of a Co/C heterostructure under an applied voltage
- Author
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Ya-Huei Huang, Yen-Fa Liao, Shih-Jye Sun, Yen-Chen Chang, Yeong-Der Yao, Jing-Ya Huang, Jian-Shing Lee, and Hua-Shu Hsu
- Subjects
Materials science ,Absorption spectroscopy ,Magnetic circular dichroism ,chemistry.chemical_element ,Heterojunction ,02 engineering and technology ,General Chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Molecular physics ,Capacitance ,Condensed Matter::Materials Science ,symbols.namesake ,chemistry ,0103 physical sciences ,symbols ,Density of states ,General Materials Science ,010306 general physics ,0210 nano-technology ,Raman spectroscopy ,Cobalt ,Voltage - Abstract
In this work, electrical manipulation of the magneto-optical properties of a cobalt (Co)/carbon (C) heterostructure is demonstrated via reversible voltage (V)-dependent magnetic circular dichroism (MCD) measurements to provide information on its spin-polarized density of states. Complex impedance spectroscopy revealed the occurrence of capacitance effects between Co and C. Suppression of the radial distribution functions of the X-ray absorption spectra and changes in the Raman spectra reveal that charge injection under an applied V results in increased interstitial charge densities. Angle-dependent changes in MCD under an applied V reveal that variations in C–Co hybridization due to charge accumulation are responsible for the observed phenomena.
- Published
- 2018
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