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- 1. J. Appl. Phys. 102, 013530 (2007) , “Fluorine-vacancy complexes in Si-SiGe-Si structures”, D. A. Abdulmalik, P. G. Coleman, H. A. W. El Mubarek, and P. AshburnFluorine-vacancy (FV) complexes have been directly observed in the Si0.94Ge0.06 layer in a Si-SiGe-Si structure, using variable-energy positron annihilation spectroscopy (VEPAS). These complexes are linked to the significant reduction of boron diffusion in the SiGe layer via... (Read more)
- 2. J. Appl. Phys. 101, 023515 (2007) , “He induced nanovoids for point-defect engineering in B-implanted crystalline Si”, E. Bruno, S. Mirabella, F. Priolo, E. Napolitani, C. Bongiorno, and V. RaineriIn this paper we present a systematic study on the formation of He ion implantation induced nanovoids in Si and how they influence the self-interstitial (Is) supersaturation, thus affecting the diffusion and electrical activation of implanted boron in crystalline silicon. We implanted He ions... (Read more)
- 3. Phys. Rev. B 75, 193201 (2007) , “Compensating point defects in 4He+-irradiated InN”, F. Tuomisto, A. Pelli, K. M. Yu, W. Walukiewicz, and W. J. SchaffWe use positron annihilation spectroscopy to study 2 MeV 4He+-irradiated InN grown by molecular-beam epitaxy and GaN grown by metal-organic chemical-vapor deposition. In GaN, the Ga vacancies act as important compensating centers in the irradiated material, introduced at a... (Read more)
- 4. Phys. Rev. B 75, 113201 (2007) , “Local structure around Mn atoms in Si crystals implanted with Mn+ studied using x-ray absorption spectroscopy techniques”, A. Wolska, K. Lawniczak-Jablonska, M. Klepka, M. S. Walczak, and A. MisiukThe local order around Mn atoms in the Mn-implanted Si samples, with ferromagnetic properties, has been investigated by use of x-ray-absorption spectroscopy techniques. Analysis of both extended x-ray-absorption fine structure and x-ray absorption near-edge structure spectra clearly indicates that... (Read more)
- 5. Phys. Rev. B 75, 085203 (2007) , “Structural and magnetic properties of Mn-implanted Si”, Shengqiang Zhou, K. Potzger, Gufei Zhang, A. Mücklich, F. Eichhorn, N. Schell, R. Grötzschel, B. Schmidt, W. Skorupa, M. Helm, J. Fassbender, and D. GeigerStructural and magnetic properties in Mn-implanted, p-type Si were investigated. High resolution structural analysis techniques such as synchrotron x-ray diffraction revealed the formation of MnSi1.7 nanoparticles already in the as-implanted samples. Depending on the Mn fluence,... (Read more)
- 6. Phys. Rev. B 75, 075304 (2007) , “Damage evolution in low-energy ion implanted silicon”, R. Karmouch, Y. Anahory, J.-F. Mercure, D. Bouilly, M. Chicoine, G. Bentoumi, R. Leonelli, Y. Q. Wang, and F. SchiettekatteThe annealing of damage generated by low-energy ion implantation in polycrystalline silicon (poly-Si) and amorphous silicon (a-Si) is compared. The rate of heat release between implantation temperature and 350–500 °C for Si implanted in both materials and for different ions implanted in... (Read more)
- 7. Phys. Rev. B 75, 075201 (2007) , “Influence of isotopic substitution and He coimplantation on defect complexes and voids induced by H ions in silicon”, O. Moutanabbir, B. Terreault, M. Chicoine, F. Schiettekatte, and P. J. SimpsonWe present a detailed study of the comparative thermal evolutions of H- and D-related defects in silicon implanted with 2×1016 H or D/cm2, or coimplanted with 0.25×1016 He/cm2 and 0.7×1016 H/cm2, in both orders.... (Read more)
- 8. Phys. Rev. B 75, 035309 (2007) , “Role of hydrogen in hydrogen-induced layer exfoliation of germanium”, J. M. Zahler, A. Fontcuberta i Morral, M. J. Griggs, Harry A. Atwater, and Y. J. ChabalThe role of hydrogen in the exfoliation of Ge is studied using cross-sectional transmission electron microscopy, atomic force microscopy, and multiple-internal transmission mode Fourier-transform infrared absorption spectroscopy and compared with the mechanism in silicon. A qualitative model for the... (Read more)
- 9. Phys. Rev. Lett. 98, 265502 (2007) , “Monovacancy and Interstitial Migration in Ion-Implanted Silicon”, P. G. Coleman and C. P. BurrowsThe migration of monovacancies (V0) and self-interstitials (I) has been observed in ion-implanted low-doped float-zone silicon by variable-energy positron annihilation spectroscopy. V0 and I were created by the in situ implantation of ~20 keV... (Read more)
- 10. Phys. Rev. Lett. 98, 227401 (2007) , “Formation of Hydrogen Impurity States in Silicon and Insulators at Low Implantation Energies”, T. Prokscha, E. Morenzoni, D. G. Eshchenko, N. Garifianov, H. Glückler, R. Khasanov, H. Luetkens, and A. SuterThe formation of hydrogenlike muonium (Mu) has been studied as a function of implantation energy in intrinsic Si, thin films of condensed van der Waals gases (N2, Ne, Ar, Xe), fused and crystalline quartz, and sapphire. By varying the initial energy of positive muons... (Read more)
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