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- 1. J. Appl. Phys. 104, 014106 (2008) , “Analysis of electrically biased paramagnetic defect centers in HfO2 and HfxSi1−xO2 / (100)Si interfaces”, P. T. Chen, B. B. Triplett, J. J. Chambers, L. Colombo, P. C. McIntyre, and Y. NishiThis study reports on the first experimental observations of electrically biased paramagnetic defects at 800 °C N2 annealed HfxSi1−xO2 (x=0.4, and 0.6)/(100)Si and HfO2/(100)Si interfaces in metal oxide silicon... (Read more)
- 2. Appl. Phys. Lett. 91, 133507 (2007) , “Identification of atomic-scale defect structure involved in the negative bias temperature instability in plasma-nitrided devices”, J. P. Campbell, P. M. Lenahan, A. T. Krishnan, and S. KrishnanWe utilize a very sensitive electron spin resonance technique called spin-dependent tunneling to identify defect centers involved in the negative bias temperature instability in plasma-nitrided p-channel metal-oxide-silicon field-effect transistors. The defect's 29Si hyperfine... (Read more)
- 3. Appl. Phys. Lett. 90, 123502 (2007) , “Observation of negative bias stressing interface trapping centers in metal gate hafnium oxide field effect transistors using spin dependent recombination”,The authors combine metal oxide semiconductor (MOS) gated diode measurements and very sensitive electrically detected electron spin resonance measurements to detect and identify negative bias temperature instability (NBTI) generated defect centers in fully processed HfO2 pMOS field effect... (Read more)
- 4. Appl. Phys. Lett. 90, 073507 (2007) , “Fermi-level pinning at polycrystalline silicon-HfO2 interface as a source of drain and gate current 1/f noise”, P. Magnone, F. Crupi, L. Pantisano, and C. PaceThe impact of a submonolayer of HfO2 sandwiched between the SiON gate dielectric and the polycrystalline silicon layer on the low frequency noise of a n-channel metal oxide semiconductor field effect transistor is investigated. Fermi-level pinning at polycrystalline... (Read more)
- 5. Phys. Rev. B 75, 193203 (2007) , “Hf defects in c-Si and their importance for the HfO2/Si interface: Density-functional calculations”, Wanderlã L. Scopel, Antônio J. R. da Silva, and A. FazzioWe have studied, using ab initio density functional theory calculations, substitutional and interstitial Hf impurities in c-Si, for various charge states. Our results indicate that (1) the tetrahedral interstitial defect is energetically more favorable than the substitutional and (2)... (Read more)
- 6. 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)
- 7. Phys. Rev. B 75, 144108 (2007) , “Interaction mechanism between edge dislocations and asymmetrical tilt grain boundaries investigated via quasicontinuum simulations”, T. Shimokawa, T. Kinari, and S. ShintakuThe interactions between edge dislocations and grain boundaries—dislocation pileup, dislocation absorption, and dislocation transmission—are studied by performing quasicontinuum simulations. The 112 asymmetrical tilt grain boundaries with different misorientation angles are used. The... (Read more)
- 8. Phys. Rev. B 75, 085423 (2007) , “Room-temperature atmospheric oxidation of Si nanocrystals after HF etching”, X. D. Pi, L. Mangolini, S. A. Campbell, and U. KortshagenThe effect of HF etching of the silicon oxide shell covering the surface of Si nanocrystals (NCs) on the subsequent room-temperature atmospheric oxidation of Si-NCs has been investigated by means of photoluminescence measurements, Fourier transform infrared spectroscopy, and electron paramagnetic... (Read more)
- 9. Phys. Rev. B 75, 075316 (2007) , “Theoretical investigation of a Mn-doped Si/Ge heterostructure”, J. T. Arantes, Antônio J. R. da Silva, A. Fazzio, and A. AntonelliWe investigate, through ab initio density-functional theory calculations, the electronic and structural properties of neutral Mn impurities at tetrahedral interstitial and substitutional sites in both Si and Ge layers of a Si/Ge heterostructure. We conclude that substitutional Mn at the Ge... (Read more)
- 10. Phys. Rev. B 75, 075306 (2007) , “Microcrack-induced strain relief in GaN/AlN quantum dots grown on Si(111)”, G. Sarusi, O. Moshe, S. Khatsevich, D. H. Rich, and B. DamilanoThe optical properties of vertically stacked self-assembled GaN/AlN quantum dots (QD's) grown on Si substrates were studied by means of temporally and spatially resolved cathodoluminescence (CL). An analysis of the CL spectra, thermal activation energies, and measured decay times of the QD... (Read more)
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