Matches in SemOpenAlex for { <https://semopenalex.org/work/W2792816446> ?p ?o ?g. }
- W2792816446 abstract "Long wavelength vibrational modes in the ferromagnetic semiconductor Ga_{0.91}Mn_{0.09}As are investigated using time resolved x-ray diffraction. At room temperature, we measure oscillations in the x-ray diffraction intensity corresponding to coherent vibrational modes with well-defined wavelengths. When the correlation of magnetic impurities sets in, we observe the transition of the lattice into a disordered state that does not support coherent modes at large wavelengths. Our measurements point toward a magnetically induced broadening of long wavelength vibrational modes in momentum space and their quasilocalization in the real space. More specifically, long wavelength vibrational modes cannot be assigned to a single wavelength but rather should be represented as a superposition of plane waves with different wavelengths. Our findings have strong implications for the phonon-related processes, especially carrier-phonon and phonon-phonon scattering, which govern the electrical conductivity and thermal management of semiconductor-based devices." @default.
- W2792816446 created "2018-03-29" @default.
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- W2792816446 date "2018-03-08" @default.
- W2792816446 modified "2023-10-15" @default.
- W2792816446 title "Spatial Distortion of Vibration Modes via Magnetic Correlation of Impurities" @default.
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- W2792816446 doi "https://doi.org/10.1103/physrevlett.120.105501" @default.
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