« Previous
1
Next »
(27 hits, 1/1)
Showing
10, 25, 50, 100, 500, 1000, all papers per page.
Sort by:
last publication date,
older publication date,
last update date.
- 1. Phys. Rev. B 74, 100201(R) (2006) , “Direct spectroscopic observation of the atomic-scale mechanisms of clustering and homogenization of rare-earth dopant ions in vitreous silica”, Sabyasachi Sen, Rafail Rakhmatullin, Ruslan Gubaidullin, and Andreas PöpplStructural aspects of clustering of rare earth ions in oxide glasses have been studied for the last several years in relation to their applications in photonics. However, the mechanism of homogenization of the spatial distribution of rare earth ions by codoping, typically with Al or P, is still not... (Read more)
- 2. Phys. Rev. B 74, 035202 (2006) , “Computation of the Stark effect in P impurity states in silicon”, A. Debernardi, A. Baldereschi, and M. FanciulliWe compute within the effective-mass theory and without adjustable parameters the Stark effect for shallow P donors in Si with anisotropic band structure. Valley-orbit coupling is taken into account in a nonperturbative way and scattering effects of the impurity core are included to properly... (Read more)
- 3. Phys. Rev. B 73, 075201 (2006) , “Electron paramagnetic resonance and theoretical studies of shallow phosphorous centers in 3C-, 4H-, and 6H-SiC”, N. T. Son, A. Henry, J. Isoya, M. Katagiri, T. Umeda, A. Gali, E. Janz?nContinuous-wave (cw) electron paramagnetic resonance (EPR) at both X-band and W-band frequencies, pulsed-EPR, and pulsed electron nuclear double resonance (ENDOR) were used to study phosphorus shallow donors in 3C-, 4H-, and 6H-SiC doped with phosphorus (P) during... (Read more)
- 4. Phys. Rev. Lett. 97, 227401 (2006) , “Optical Detection and Ionization of Donors in Specific Electronic and Nuclear Spin States”, A. Yang, M. Steger, D. Karaiskaj, M. L. W. Thewalt, M. Cardona, K. M. Itoh, H. Riemann, N. V. Abrosimov, M. F. Churbanov, A. V. Gusev, A. D. Bulanov, A. K. Kaliteevskii, O. N. Godisov, P. Becker, H.-J. Pohl, J. W. Ager III, and E. E. HallerWe resolve the remarkably sharp bound exciton transitions of highly enriched 28Si using a single-frequency laser and photoluminescence excitation spectroscopy, as well as photocurrent spectroscopy. Well-resolved doublets in the spectrum of the 31P donor reflect the hyperfine... (Read more)
- 5. Physica B 376-377, 358-361 (2006) , “Pulsed EPR studies of Phosphorus shallow donors in diamond and SiC”, J. Isoya, M. Katagiri, T. Umeda, S. Koizumi, H. Kanda, N. T. Son, A. Henry, A. Gali, E. Janz?nPhosphorus shallow donors having the symmetry lower than Td are studied by pulsed EPR. In diamond:P and 3C–SiC:P, the symmetry is lowered to D2d and the density of the donor wave function on the phosphorus atom exhibits a predominant p-character. In 4H–SiC:P with the site symmetry of... (Read more)
- 6. Phys. Rev. B 70, 085202 (2004) , “Reassignment of phosphorus-related donors in SiC”, E. Rauls, M. V. B. Pinheiro, S. Greulich-Weber, and U. GerstmannCombining efficient density-functional based tight-binding molecular dynamics with ab initio calculations, we show that despite higher formation energies the incorporation of phosphorus at the carbon sublattice is favored by kinetic effects during the annealing processes. Based on the... (Read more)
- 7. Nucl. Instrum. Methods Phys. Res. B 206, 965 (2003) , “ESR characterization of activation of implanted phosphorus ions in silicon carbide”, J. Isoya, T. Ohshima, A. Ohi, N. Morishita and H. ItohPhosphorus ion implantations of 6H-SiC in the mean phosphorus concentration of the implanted layer of 1 × 1018 cm−3 were performed both at multi-fold energy between 9 and 21 MeV and at 340 keV. In the high-energy implantations at room temperature, 400, 800 and 1200 °C and in the 340... (Read more)
- 8. Phys. Rev. B 64, 115308 (2001) , “Experimental Investigation of Band Structure Modification in Silicon Nanocrystals”, B. J. Pawlak, T. Gregorkiewicz, C. A. J. Ammerlaan, W. Takkenberg, F. D. Tichelaar, P. F. A. Alkemade.Experimental studies of size-related effects in silicon nanocrystals are reported. We present investigations carried out on nanocrystals prepared from single-crystal Si:P wafer by ball milling. The average final grain dimension varied depending on the way of preparation in the range between 70 and... (Read more)
- 9. Physica B 302-303, 212-219 (2001) , “Magnetic resonance studies of shallow donor centers in hydrogenated Cz–Si crystals”, B. Langhanki, S. Greulich-Weber, J. ?M. Staeth, V. P. Markevich, L. I. Murin, T. Mchedlidze, M. Suezawa.A complex magnetic resonance study (EPR, electrically detected EPR, ENDOR) of hydrogen-related radiation-induced shallow donors in silicon has been performed. Three species of this donor family (D1–D3) were observed earlier by means of infrared absorption measurements in hydrogenated... (Read more)
- 10. Phys. Rev. B 61, 12602 (2000) , “Phosphorus-related deep donor in SiC”, A. Gali, P. De?k, P. R. Briddon, R. P. Devaty, W. J. ChoykeTwo phosphorus centers in SiC, an isolated P atom substituting for Si (PSi) and a Si-site P-atom adjacent to a carbon vacancy (PSi+VC) are investigated by first principle calculations. It is shown that PSi+VC produces a singly occupied donor... (Read more)
- 11. J. Vac. Sci. Technol. B 16, 2134-2153 (1998) , “What can electron paramagnetic resonance tell us about the Si/SiO2 system?”, P. M. Lenahan, J. F. Conley, Jr.Electron paramagnetic resonance (EPR) measurements of Si/SiO2 systems began over 30 years ago. Most EPR studies of Si/SiO2 systems have dealt with two families of defects: Pb centers and E centers. Several variants from each group have... (Read more)BPSG PSG Si SiO2| EDMR EPR electric-field-effect electrical-meas. etching gamma-irradiation| 10B 11B 1H 29Si 2D 31P BOHC Boron Deuterium E' E'-delta H(I) Hydrogen Nb Nitrogen Oxygen P1 P2 P4 POHC Pb Pb0 Pb1 Phosphorus Silicon amorphous complex(=3) dangling-bond device dielectric interface pair(=2) | last update: Takahide Umeda
- 12. phys. stat. sol. (b) 210, 415-427 (1998) , “The Microscopic and Electronic Structure of Shallow Donors in SiC”, S. Greulich-WeberNitrogen donors in 6H-, 4H- and 3C-SiC were investigated using conventional electron paramagnetic resonance (EPR) and electron nuclear double resonance (ENDOR) and the experimental results are discussed. An attempt is presented to interpret the experimentally found large differences in hyperfine... (Read more)
- 13. phys. stat. sol. (a) 162, 95-151 (1997) , “EPR and ENDOR Investigations of Shallow Impurities in SiC Polytypes”, S. Greulich-WeberInvestigations of nitrogen donors in 6H-, 4H- and 3C-SiC using conventional electron paramagnetic resonance (EPR), electron nuclear double resonance (ENDOR) and optical detection of EPR and ENDOR as well as optical absorption and emission spectroscopy are reviewed and critically discussed. An... (Read more)
- 14. Proc. symp. on the degradation od electronic devices due to device operation as well as crystalline and process-induced defects 94-1, 221-234 (1994) , ECS (ISBN:1-56677-037-8) , “Spin dependent recombination in Si p-n junctions”, B. K. Meyer , P. Christmann , W. Stadler, H. Overhof, J.-M. Spaeth, S. Greulich-Weber, B. Stich
- 15. Phys. Rev. B 47, 6363-6380 (1993) , “Electron paramagnetic resonance of multistable interstitial-carbonsubstitutional-group-V-atom pairs in silicon”, X. D. Zhan, G. D. WatkinsA total of five new electron paramagnetic resonance (EPR) centers are observed in electron-irradiated P-, As-, and Sb-doped silicon. Three are identified as arising from the neutral charge state of the stable configuration and two of the four metastable configurations of an... (Read more)
- 16. Semicond. Sci. Technol. 8, 1385-1392 (1993) , “Electrically detected electron paramagnetic resonance of a deep recombination centre in a silicon diode”, B. Stich , S. Gruelich-Weber , J.-M. Spaeth , H. Overhof
- 17. Solid State Commun. 57, 615-617 (1986) , “THE OPTICALLY DETECTED MAGNETIC RESONANCE OF DANGLING BONDS AT THE Si/SiO2 INTERFACE”, K. M. Lee, L. C. Kimerling, B. G. Bagley, W. E. QuinnThe optically detected magnetic resonance (ODMR) observation of dangling bonds at the Si/SiO2 interface (Pb centers) is reported in this Communication. A luminescence quenching signal is identified as arising from the Pb center through its axially symmetry g tensor along the <1 1 1#62;... (Read more)
- 18. Mater. Res. Soc. Symp. Proc. 46, 227 (1985) , “Defect Identification in Silicon Using Electron Nuclear Double Redonance”, C. A. J. Ammerlaan, M. Sprenger, R. van Kemp, D. A. van Wezep.The application of electron nuclear double resonance (ENDOR) for identification and characterization of point defects in silicon is reviewed. Taking the vacancy and the boron-vacancy complex as examples it is discussed how ENDOR can provide information on the atomic and electronic structure of paramagnetic centers.
- 19. J. Phys. Chem. 88, 5255-5260 (1984) , “Dynamic Interchange among Three States of Phosphorus (4+) in ?-Quartz. 2.”, Y. Uchida, J. Isoya, J. A. WeilThe dynamic process due to electron jumping among three states with different sp hybrid directions in the quasitetrahedral P4+ center [PO4]0 in a-quartz has been investigated by 10-GHz electron paramagnetic resonance, over the temperature range 40 to 400 K. The relative populations (mole fractions ƒІ and ƒІІ) of the ground state P(І) and two degenerate thermally excited states P(ІІ) were determined from the measured EPR absorption line intensity ratios and from the line positions of the averaged state P(A), respectively, in the slow and fast kinetic regions. The temperature dependence of the mole fractions has been explained by considering vibrational sublevels in the potential well describing each state. The jump rate was also obtained, via EPR absorption line-width analysis based on the Bloch equations, in both the slow and the fast regions. The characteristic parameters of the dynamic process, Le., energy separation and vibrational sublevels of the ground and excited states, and barrier height between these, have been determined. (Read more)
- 20. J. Phys. Chem. 83, 3462-3467 (1979) , “Dynamic Interchange among Three States of Phousphorus 4+ in ?-Quartz”, Y. Uchida, J. Isoya, J. A. WeilDynamic averaging due to electron jumping among three states with different sp hybrid directions in the P4+ center [PO4]0 in α-quartz has been studied by single-crystal electron paramagnetic resonance. The spin-Hamiltonian matrices g and Aslp for low temperature (i.e., C140 K) spectra P(І) and P(â…¡) and for high temperature spectrum P(A) are reported. For each crystal site, the line positions of P(A) agree well with those derived from the matrices measured for the three states. i.e., with weighted averages including P(І) and the two symmetry-related P(â…¡) spectra. (Read more)
- 21. J. Appl. Phys. 49, 2401-2406 (1978) , “Resistance changes induced by electron-spin resonance in ion-implanted Si : P system”, K. Murakami, S. Namba, N. Kishimoto, K. Masuda, K. GamoThe ESR-induced changes in the dc resistance, /||ESR, of P-ion-implanted silicon have been observed for the first time. The transfer of absorbed Zeeman energy at liquid-He temperature has been investigated. The /||ESR signals observed were a narrow line with a g value of... (Read more)
- 22. J. Appl. Phys. 43, 3499-3506 (1972) , “Electron Paramagnetic Resonance of the lattice Damage in Oxygen-Implanted Silicon”, K.L. Brower and Wendland BeezholdThe nature of the lattice damage produced at room temperature in ion-implanted intrinsic and n-type silicon has been studied as a function of 160-keV O+ ion fluence using electron paramagnetic resonance (EPR). The known EPR spectra observed were the negative divacancy (Si-G7), the... (Read more)Si| EPR ion-implantation neutron-irradiation| 31P D G7 Oxygen P3 Phosphorus S1 S2 SL2 Silicon amorphous vacancy .inp files: Si/SL2 | last update: Takahide Umeda
- 23. J. Phys. Soc. Jpn. 20, 1447 (1965) , “Electron Spin Resonance in Phosphorus Doped Silicon at Low Temperatures”, S. Maekawa, N. Kinoshita.Effects of exchange and motion on electron spin resonance spectrum of phosphorus doped Si with concentration of 3×1016cm-3～3×1019cm-3 were investigated at liquid helium temperatures and at about 9300 Mc/sec. At lower concentrations, the intensity of... (Read more)
- 24. Phys. Rev. 134, A265 (1964) , “Electron Spin Resonance Experiments on Shallow Donors in Germanium”, D. K. WilsonAt liquid helium temperatures, spin resonance of localized donor electrons has been observed in phorphorus-, arsenic-, and bismuth-doped germanium. The presence of hyperfine splitting confirms the singlet as the ground state for all three. The separation of the excited triplet states has been... (Read more)
- 25. Solid State Physics 5, 258-319 (1957) , Academic Press, New York (Edited by F. Seitz, D. Turnbull) , “Shallow Impurity States in Silicon and Germanium”, W. KohnI. Introduction (p.258): II. Emprical Properties (p.261): 1. Energy Levels (p.261), a. Ionization Energies, b. Spectra of Excited States, 2. Spin Resonance (p.266), a. Electron Spin Resonance, b. Double Resonance, 3. Static Magnetic Susceptibility (p.271), III. Structure of Donor States (p.271): 4. Conduction Bands of Silicon and Germanium (p.271), a. Silicon, b. Germanium, 5. Effective Mass Theory of Donor States (p.274), a. Single Band Minimum at k=0, b. Several Conduction Band Minima, c. Matrix Elements for Radiative Transitions, 6. Numerical Results and Comparison with Experiments (p.285), a. Energy Levels, b. Wave Functions, 7. Corrections to the Effective Mass Formalism (p.289), a. General Considerations, b. Corrected Wave Functions, c. Comparison with Experiment, IV. Structure of Acceptor States (p.297): 8. Valence Bands of Silicon and Germanium (p.297), a. Silicon, b. Germanium, 9. Effective Mass Equations for Acceptor States (p.300), 10. Approximate Solutions and Comparison with Experiment (p.301) a. Germanium b. Silicon V.Effects of Strains and of Static Electric and Magnetic Fields (p.306): 11. Strains (p.306) a. Donor States, b. Acceptor States, 12. Stark Effect (p.311)
- 26. Phys. Rev. 103, 834 (1956) , “Observation of Nuclear Magnetic Resonances via the Electron Spin Resonance Line”, G. Feher.The double-frequency resonance method reported recently in connection with a unclear polarization schemehas been extended to observe unclear transitions and thereby determine hyperfine interactions and unclear g values. (Read more)
- 27. Phys. Rev. 103, 501 (1956) , “Polarization of Phosphorus Nuclei in Silicon”, G. Feher and E. A. GereIn the preceding Letter a scheme for polarizing unclei was described.This letter deals with the experimental verificationof the scheme. (Read more)
« Previous
1
Next »
(27 hits, 1/1)
Showing
10, 25, 50, 100, 500, 1000, all papers per page.
Sort by:
last publication date,
older publication date,
last update date.
RSS
Updated at 2010-07-20 16:50:39
(view as: tree
,
cloud
)
| 1329 | untagged |
Materials
(111 tags)
Others(101 tags)
Technique
(46 tags)
Details
(591 tags)
Bond(35 tags)
Defect(interstitial)(18 tags)
Defect(vacancy)(15 tags)
Defect-type(19 tags)
Element(65 tags)
Energy(8 tags)
Isotope(56 tags)
Label(303 tags)
Sample(17 tags)
Spin(8 tags)
Symmetry(15 tags)