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- 1. Appl. Phys. Lett. 89, 222101 (2006) , “Reversible creation and annihilation of a local leakage path in HfO2/GeOx stacked gate dielectrics: A direct observation by ultrahigh vacuum conducting atomic force microscopy”, K. Yamamura, K. Kita, A. Toriumi, and K. KyunoBy direct observation using ultrahigh vacuum conducting atomic force microscopy, it is found that a local leakage path in HfO2/GeOx stacks created by an electrical stress with a positive tip bias annihilates after applying a reverse tip bias. The creation and... (Read more)
- 2. Phys. Rev. B 73, 073302 (2006) , “Origin of Pb1 center at SiO2/Si(100) interface: First-principles calculations”, K. Kato, T. Yamasaki, T. UdaBased on first-principles calculations, we studied the generation behavior of Pb centers at SiO2/Si interfaces, especially for Pb1 centers, under oxidation of Si(100) surfaces. Pb1 centers were found to be formed... (Read more)
- 3. Phys. Rev. Lett. 97, 016102 (2006) , “Scaling and Universality of Roughening in Thermal Oxidation of Si(001)”, Hiroo Omi, Hiroyuki Kageshima, and Masashi UematsuBy analyzing atomic force microscopy images, we derive a continuum equation that quantitatively explains the roughening at the Si(001)-SiO2 interface during thermal oxidation at the temperature at 1200 °C in an Ar atmosphere containing a small fraction of O2. We also show... (Read more)
- 4. Phys. Rev. Lett. 92, 105505 (2004) , “In situ ESR Observation of Interface Dangling Bond Formation Processes During Ultrathin SiO2 Growth on Si(111)”, W. Futako, N. Mizuochi, and S. YamasakiWe report the formation processes of interface dangling bonds (Pb centers) during initial oxidation of a clean Si(111) surface using an ultrahigh-vacuum electron-spin-resonance technique. At the oxidation of one or two Si layer(s), the Pb center... (Read more)
- 5. Phys. Rev. B 67, 195338 (2003) , “Layer-resolved kinetics of Si oxidation investigated using the reflectance difference oscillation method”, T. Yasuda, N. Kumagai, M. Nishizawa, S. Yamasaki, H. Oheda, and K. YamabeDry oxidation kinetics of the Si(001) surface has been investigated using reflectance difference oscillation to resolve atomic-scale phenomena. The activation energy for oxidation has been found to increase as the oxide-Si interface moves in the depth direction, reaching the value for bulk... (Read more)
- 6. J. Non-Cryst. Solids 239, 16-48 (1998) , “Optically active oxygen-deficiency-related centers in amorphous silicon dioxide”, Linards SkujaThe spectroscopic properties, structure and interconversions of optically active oxygen-deficiency-related point defects in vitreous silica are reviewed. These defects, the E′-centers (oxygen vacancies with a trapped hole or 3-fold-coordinated silicons), different variants of diamagnetic... (Read more)GeO2 SiO2| EPR PL gamma-irradiation optical-spectroscopy| 0.5-1.0eV 1.0eV~ 1H 2.0eV~ 3.0eV~ 4.0eV~ 5.0eV~(larger) Chlorine E' E'-alpha E'-betha E'-delta E'-gamma Germanium H(I) H(II) Hydrogen ODC ODC(I) ODC(II) OHC Oxygen POR Silicon amorphous dangling-bond dielectric interstitial pair(=2) surface triplet vacancy | last update: Takahide Umeda
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