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- 1. 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)
- 2. Appl. Phys. Lett. 89, 231901 (2006) , “Cathodoluminescence investigations of GaInNAs on GaAs(111)B”, J. Miguel-Sánchez, U. Jahn, A. Guzmán, and E. MuñozIn this work, we present a detailed cathodoluminescence characterization of GaInNAs quantum wells grown on GaAs(111)B. As-grown and annealed InGaAs and GaInNAs quantum wells were maeasured and compared by spatially resolved cathodoluminescence at different photon energies. In the case of... (Read more)
- 3. Appl. Phys. Lett. 88, 252109 (2006) , “Origin of the n-type conductivity of InN: The role of positively charged dislocations”, L. F. J. Piper, T. D. Veal, C. F. McConville, Hai Lu, and W. J. SchaffAs-grown InN is known to exhibit high unintentional n-type conductivity. Hall measurements from a range of high-quality single-crystalline epitaxially grown InN films reveal a dramatic reduction in the electron density (from low 1019 to low 1017 cm3)... (Read more)
- 4. J. Appl. Phys. 100, 094903 (2006) , “Effect of dislocations on electrical and electron transport properties of InN thin films. II. Density and mobility of the carriers”, V. Lebedev, V. Cimalla, T. Baumann, O. Ambacher, F. M. Morales, J. G. Lozano, and D. González.The influence of dislocations on electron transport properties of undoped InN thin films grown by molecular-beam epitaxy on AlN(0001) pseudosubstrates is reported. The microstructure and the electron transport in InN(0001) films of varying thickness were analyzed by transmission electron microscopy... (Read more)
- 5. J. Appl. Phys. 100, 094902 (2006) , “Effect of dislocations on electrical and electron transport properties of InN thin films. I. Strain relief and formation of a dislocation network”, V. Lebedev, V. Cimalla, J. Pezoldt, M. Himmerlich, S. Krischok, J. A. Schaefer, O. Ambacher, F. M. Morales, J. G. Lozano, and D. GonzálezThe strain-relaxation phenomena and the formation of a dislocation network in 2H-InN epilayers during molecular beam epitaxy are reported. Plastic and elastic strain relaxations were studied by reflection high-energy electron diffraction, transmission electron microscopy, and high resolution... (Read more)
- 6. Phys. Rev. B 74, 245219 (2006) , “Dynamics of positively charged muonium centers in indium nitride”, Y. G. Celebi, R. L. Lichti, B. E. Coss, and S. F. J. CoxMuon spin depolarization measurements performed on powdered InN with zero applied magnetic field reveal several positively charged diamagnetic muonium centers. At low temperatures, the Mu+ ground state is weakly relaxing with the characteristics of local tunneling motion, which changes to... (Read more)
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