Raman scattering study on diluted magnetic semiconductor Ga1-xMnxAs prepared by Mn-ion implantation

Raman scattering measurements have been performed in diluted magnetic semiconductor Ga1-xMnxAs prepared by Mn-ion implantation, deposition, and post-annealing technique. It is found that the Raman spectrum measured from the implanted surface of the sample shows some new weak modes in addition to the GaAs-like modes which are observed from the unimplanted surface. The new vibrational modes observed are assigned to MnAs-like modes. The coupled LO-phonon plasmon mode, and Mn and As related vibrational modes caused by Mn-ion implantation, deposition, and post-annealing are also observed. Furthermore, the GaAs-like modes are found to be shifted by approximately 4 cm(-1) in the lower frequency side, compared with those observed from the unimplanted surface.

Raman scattering measurements have been performed in diluted magnetic semiconductor Ga1-xMnxAs prepared by Mn-ion implantation, deposition, and post-annealing technique. It is found that the Raman spectrum measured from the implanted surface of the sample shows some new weak modes in addition to the GaAs-like modes which are observed from the unimplanted surface. The new vibrational modes observed are assigned to MnAs-like modes. The coupled LO-phonon plasmon mode, and Mn and As related vibrational modes caused by Mn-ion implantation, deposition, and post-annealing are also observed. Furthermore, the GaAs-like modes are found to be shifted by approximately 4 cm(-1) in the lower frequency side, compared with those observed from the unimplanted surface.

zhangdi于2010-03-29批量导入

zhangdi于2010-03-29批量导入

IEEE Electron Devices Soc.; Chinese Acad Sci.; Natl Nat Sci Fdn China.; Hakuto Co Ltd.; Shenzhen Oceans King Investment Imp & Exp Co.; Shenzhen Refond Opt ELE Co Ltd.; Jiangsu Nata Optoelect Mat Co Ltd.; Beijing Univ Technol.; Gen Res Inst Nnferrous Mat.; Nanjing Univ.; Shanghai Inst Microsyst & Informat Technol.; Sun Yat Univ.; Shanghai Inst Microsyst & Informat Technol.; Sun Yat Univ.; Zhejiang Univ.

Chinese Acad Sci, Inst Semicond, Lab Semicond Mat Sci, Beijing 100083, Peoples R China

IEEE Electron Devices Soc.; Chinese Acad Sci.; Natl Nat Sci Fdn China.; Hakuto Co Ltd.; Shenzhen Oceans King Investment Imp & Exp Co.; Shenzhen Refond Opt ELE Co Ltd.; Jiangsu Nata Optoelect Mat Co Ltd.; Beijing Univ Technol.; Gen Res Inst Nnferrous Mat.; Nanjing Univ.; Shanghai Inst Microsyst & Informat Technol.; Sun Yat Univ.; Shanghai Inst Microsyst & Informat Technol.; Sun Yat Univ.; Zhejiang Univ.