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Raman scattering study on vibrational modes has been reported in ferromagnetic semiconductor Ga1-xMnxSb grown by Mn ions implantation, deposition, and post-annealing. The Raman experiments are performed in the implanted and unimplanted regions of the sample before and after etching. Only GaSb-like phonon modes are observed in the spectra measured from the unimplanted region. However, in addition to...
Raman scattering determination of hole density has been reported in diluted magnetic semiconductor Ga1-xMnxSb prepared by Mn ions implantation, deposition, and post annealing. The Raman spectra measured from the implanted region of the sample show coupled plasmon LO-phonon mode (CPLOM), which is found to be superimposed with GaSb-like phonon modes in the spectra. The spectral lineshapes are modeled...
Microstrip silicon sensors with p-bulk and n-readout are investigated as a radiation hard device for the Super LHC experiment. We evaluated the radiation hardness of the sensors fabricated by Hamamatsu Photonics through irradiation with 70-MeV protons up to the fluence of 5 × 1015 1-MeV neq/cm2 and with 60Co γs at a rate foreseen at the Super LHC. The strip isolation and punch-through properties are...
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