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- 11. Phys. Rev. Lett. 98, 216803 (2007) , “High Mobility in LaAlO3/SrTiO3 Heterostructures: Origin, Dimensionality, and Perspectives”, G. Herranz, M. Basletić, M. Bibes, C. Carrétéro, E. Tafra, E. Jacquet, K. Bouzehouane, C. Deranlot, A. Hamzić, J.-M. Broto, A. Barthélémy, and A. FertWe have investigated the dimensionality and origin of the magnetotransport properties of LaAlO3 films epitaxially grown on TiO2-terminated SrTiO3(001) substrates. High-mobility conduction is observed at low deposition oxygen pressures... (Read more)
- 12. Phys. Rev. Lett. 98, 026101 (2007) , “Bonding at the SiC-SiO2 Interface and the Effects of Nitrogen and Hydrogen”, Sanwu Wang, S. Dhar, Shu-rui Wang, A. C. Ahyi, A. Franceschetti, J. R. Williams, L. C. Feldman,, and Sokrates T. PantelidesUnlike the Si-SiO2 interface, the SiC-SiO2 interface has large defect densities. Though nitridation has been shown to reduce the defect density, the effect of H remains an open issue. Here we combine experimental data and the results of first-principles calculations to... (Read more)
- 13. Appl. Phys. Lett. 89, 243101 (2006) , “Random telegraph signals and noise behaviors in carbon nanotube transistors”, Fei Liu, Kang L. Wang, Daihua Zhang, and Chongwu ZhouA random telegraph signal appears at a smaller absolute gate bias for a larger absolute drain-source bias in a carbon nanotube transistor. Its mechanism is attributed to a defect located in the drain side of the Schottky barrier carbon nanotube transistor with Ti/Au as contact material. Furthermore,... (Read more)
- 14. Appl. Phys. Lett. 89, 222103 (2006) , “Comparison of near-interface traps in Al2O3/4H-SiC and Al2O3/SiO2/4H-SiC structures”, Marc Avice, Ulrike Grossner, Ioana Pintilie, Bengt G. Svensson, Ola Nilsen, and Helmer FjellvagAluminum oxide (Al2O3) has been grown by atomic layer deposition on n-type 4H-SiC with and without a thin silicon dioxide (SiO2) intermediate layer. By means of capacitance-voltage and thermal dielectric relaxation current measurements, the interface... (Read more)
- 15. 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)
- 16. Appl. Phys. Lett. 89, 201911 (2006) , “Generation of misfit dislocations by basal-plane slip in InGaN/GaN heterostructures”, R. Liu, J. Mei, S. Srinivasan, F. A. Ponce, H. Omiya, Y. Narukawa, and T. MukaiThe authors have observed that for InxGa1−xN epitaxial layers grown on bulk GaN substrates exhibit slip on the basal plane, when in the presence of free surfaces that intercept the heterointerface and for indium compositions x0.07. This leads to... (Read more)
- 17. Appl. Phys. Lett. 89, 152910 (2006) , “Characterization of atomic-layer-deposited Al2O3/GaAs interface improved by NH3 plasma pretreatment”, Hong-Liang Lu, Liang Sun, Shi-Jin Ding, Min Xu, David Wei Zhang, and Li-Kang WangAl2O3 thin films were deposited by atomic layer deposition on HF-cleaned and NH3 plasma-treated GaAs surfaces, respectively. The precursors used for Al2O3 films are trimethylaluminum and water. Effects of NH3 plasma pretreatment on... (Read more)
- 18. Appl. Phys. Lett. 89, 142909 (2006) , “Fluorine passivation in poly-Si/TaN/HfO2 through ion implantation”, M. H. Zhang, F. Zhu, T. Lee, H. S. Kim, I. J. Ok, G. Thareja, L. Yu, and Jack C. LeeFluorine (F) passivation in poly-Si/TaN/HfO2/p-Si gate stacks through gate ion implantation has been studied. It has been found that when the TaN thickness was less than 15 nm, the mobility and subthreshold swing improved significantly in HfO2 n-channel... (Read more)
- 19. Appl. Phys. Lett. 89, 122112 (2006) , “Interface states for HfO2/Si structure observed by x-ray photoelectron spectroscopy measurements under bias”, Osamu Maida, Ken-ichi Fukayama, Masao Takahashi, Hikaru Kobayashi, Young-Bae Kim, Hyun-Chul Kim, and Duck-Kyun ChoiA 1.0 nm silicon nitride (SiN) layer can prevent reaction between HfO2 and Si completely. In this case, the interface state spectra obtained from x-ray photoelectron spectroscopy measurements under bias have two peaks above and below the midgap, attributable to Si dangling bonds... (Read more)
- 20. Appl. Phys. Lett. 89, 112903 (2006) , “Effect of impurities on the fixed charge of nanoscale HfO2 films grown by atomic layer deposition”, Raghavasimhan Sreenivasan, Paul C. McIntyre, Hyoungsub Kim, and Krishna C. SaraswatHfO2 films were grown by atomic layer deposition using two different precursor chemistriesHfCl4 and tetrakis(diethylamido)hafnium (TDEAH) with H2O as the oxidant. Electrical measurements on capacitor structures fabricated using the films showed a 0.4 V... (Read more)
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