We manipulated the defect concentration in a (fluoranthene)2PF6 crystal by proton irradiation through a periodic grid, resulting in a striped defect pattern. Spatially resolved pulsed X-band ESR analysis was used to quantify the resulting local defect concentrations, spin diffusion coefficients, and electron spin concentrations. The temperature dependence of the data proves that spin diffusion coefficient and Peierls transition can be tailored in a controlled way via the defect concentrations.
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Article Synopsis
- rt-TDDFT-MD study shows ultrafast structural transitions in antimony under varying excitation intensities leading to distinct behaviors like PD flipping within 1 picosecond.
- As excitation intensity increases, coherent A-phonon mode activation occurs, facilitating structural motion and transforming coherent energies into random thermal motions through phonon-phonon interactions.
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