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- 11. Phys. Rev. Lett. 98, 216601 (2007) , “Room Temperature Electrical Detection of Spin Coherence in C60”, W. Harneit, C. Boehme, S. Schaefer, K. Huebener, K. Fostiropoulos, and K. LipsAn experimental demonstration of electrical detection of coherent spin motion of weakly coupled, localized electron spins in thin fullerene C60 films at room temperature is presented. Pulsed electrically detected magnetic resonance experiments on vertical photocurrents through... (Read more)
- 12. Phys. Rev. Lett. 98, 216103 (2007) , “Influence of Cumulenic Chains on the Vibrational and Electronic Properties of sp-sp2 Amorphous Carbon”, L. Ravagnan, P. Piseri, M. Bruzzi, S. Miglio, G. Bongiorno, A. Baserga, C. S. Casari, A. Li Bassi, C. Lenardi, Y. Yamaguchi, T. Wakabayashi, C. E. Bottani, and P. MilaniWe report the production and characterization of a form of amorphous carbon with sp-sp2 hybridization (atomic fraction of sp hybridized species 20%) where the predominant sp bonding appears to be (=C=C=)n cumulene.... (Read more)
- 13. Phys. Rev. Lett. 98, 215503 (2007) , “Nature of the Bound States of Molecular Hydrogen in Carbon Nanohorns”, F. Fernandez-Alonso, F. J. Bermejo, C. Cabrillo, R. O. Loutfy, V. Leon, and M. L. SaboungiThe effects of confining molecular hydrogen within carbon nanohorns are studied via high-resolution quasielastic and inelastic neutron spectroscopies. Both sets of data are remarkably different from those obtained in bulk samples in the liquid and crystalline states. At temperatures where bulk... (Read more)
- 14. Phys. Rev. Lett. 98, 185501 (2007) , “Enhanced Ductile Behavior of Tensile-Elongated Individual Double-Walled and Triple-Walled Carbon Nanotubes at High Temperatures”, J. Y. Huang, S. Chen, Z. F. Ren, Z. Wang, K. Kempa, M. J. Naughton, G. Chen, and M. S. DresselhausWe report exceptional ductile behavior in individual double-walled and triple-walled carbon nanotubes at temperatures above 2000 °C, with tensile elongation of 190% and diameter reduction of 90%, during in situ tensile-loading experiments conducted inside a high-resolution transmission... (Read more)
- 15. Phys. Rev. Lett. 98, 075503 (2007) , “Pseudoclimb and Dislocation Dynamics in Superplastic Nanotubes”, Feng Ding, Kun Jiao, Mingqi Wu, and Boris I. YakobsonPlastic relaxation of carbon nanotubes under tension and at high temperature is described in terms of dislocation theory and with atomistic computer simulations. It is shown how the glide of pentagon-heptagon defects and a particular type of their pseudoclimb, with the atoms directly breaking out of... (Read more)
- 16. Appl. Phys. Lett. 89, 253124 (2006) , “White electroluminescence from C- and Si-rich thin silicon oxides”, O. Jambois, B. Garrido, P. Pellegrino, Josep Carreras, A. Pérez-Rodríguez, J. Montserrat, C. Bonafos, G. BenAssayag, and S. SchammWhite electroluminescence from carbon- and silicon-rich silicon oxide layers is reported. The films were fabricated by Si and C ion implantation at low energy in 40 nm thick SiO2, followed by annealing at 1100 °C. Structural and optical studies allow assigning the... (Read more)
- 17. 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)
- 18. Appl. Phys. Lett. 89, 202904 (2006) , “Effects of O vacancies and C doping on dielectric properties of ZrO2: A first-principles study”, Gargi Dutta, K. P. S. S. Hembram, G. Mohan Rao, and Umesh V. WaghmareThe authors determine electronic properties, structural stability, and dielectric response of zirconia (ZrO2) with oxygen vacancies (O vacancies) and carbon doping (C doping) using first-principles density functional theory calculations based on pseudopotentials and a plane wave basis.... (Read more)
- 19. Appl. Phys. Lett. 89, 173108 (2006) , “Midgap luminescence centers in single-wall carbon nanotubes created by ultraviolet illumination”, Konstantin Iakoubovskii, Nobutsugu Minami, Yeji Kim, Kanae Miyashita, Said Kazaoui, and Balakrishnan NaliniThe authors report the effect of ultraviolet (UV) illumination on optical properties of single-wall carbon nanotubes (SWCNTs) isolated using various dispersants. It is demonstrated that even weak UV light (~1 mW/cm2) can irreversibly alter the SWCNT structure, thus resulting in the... (Read more)
- 20. Appl. Phys. Lett. 88, 212102 (2006) , “Experimental determination of the local geometry around In and In–C complexes in Si”, F. d'Acapito, Y. Shimizu, S. Scalese, M. Italia, P. Alippi, S. GrassoThe electrical properties of dopants in Si are of primary importance for the realization of electronic devices. Indium represents a promising p-type dopant whose electrical properties are improved by codoping with C. From theoretical studies In and C are expected to pair in the Si matrix in... (Read more)
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