TO
1 - 25 of 7
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 | Ailion, David Charles; Blinc, Robert | 35Cl spin-lattice relaxation in incommensurate bis(4-chlorophenyl)sulfone | The 35C1 nuclear-quadrupole-resonance (NQR) spin-lattice relaxation rate in incommensurate bis(4- chlorophenyl)sulfone (BCPS) is determined by Raman processes below 60 K and by direct one-phonon processes above 60 K. The variation of the 35C1 spin-lattice relaxation rate over the incommensurate NQR... | 35Cl; Incommensurate bis(4-chlorophenyl)sulfone; Raman processes; NQR; Incommensurate systems | 1995-01 |
| 2 |
 | Liu, Feng | Electronic and elastic properties of edge dislocations in Si | Ab initio, tight-binding, and classical calculations have been done for (a/2)( 110) edge dislocation dipoles in Si at separations of 7.5-22.9 A in unit cells comprising 32-288 atoms. These calculations show states associated with the cores relatively deep in the band gap (~ 0.2 eV) despite the abse... | Edge dislocations | 1995-06 |
| 3 |
 | Symko, Orest George | Scattering times and mean free path in AlCuFe quasicrystalline thin films | We present magnetoresistivity measurements on AlCuFe quasicrystalline thin films from which the temperature dependence of the inelastic scattering time (ri e) has been deduced down to 200 mK in the low field limit. We show that ri e presents a weak temperature dependence below 4 K (1/ гie ~ T°-87)... | AlCuFe; Quasicrystalline thin films; Scattering times; Free path | 1995-05 |
| 4 |
 | Liu, Feng | Self-consistent tight-binding method | A self-consistent tight-binding formalism is described. The self-consistency is achieved by the introduction of a chemical hardness matrix and a generalization of the Huckel model to make the tight-binding Hamiltonian an implicit functional of the charge density. Studies of the band structures of d... | Tight-binding method; Self-consistency; Huckel model | 1995-10 |
| 5 |
 | Vardeny, Zeev Valentine | Spin dynamics of triplet photoexcitations in C60: evidence for a dynamic Jahn-Teller effect | We have used the absorption-detected magnetic-resonance (ADMR) technique to study the spin dynamics of triplet photoexcitations in C60 molecules dispersed in polystyrene glasses. We found that the ADMR spectra contain two triplet powder patterns A and B with substantial spin reorientation dynamics,... | Spin dynamics; Triplet photoexcitations; C60 | 1995-07 |
| 6 |
 | Mishchenko, Eugene | Surface excitations in metals: Brillouin and Raman light scattering | The theory of inelastic light scattering in anisotropic metals by conduction electrons interacting with acoustic and optical phonons and impurities is developed. The effects of a surface are studied in detail. The Coulomb interaction of carriers is included in a self-consistent way. The scattering c... | Raman scattering | 1995-03 |
| 7 |
 | Mattis, Daniel C. | Theory of superexchange in CuO2 | The limit method allows exact analysis of low-lying electronic states in a strong-coupling model Cu02 plane. We extend it to nonorthogonal orbitals and fit to a t-t'-J model. The superexchange parameter is J = g32t*, with the unit of energy and g3 a lumped parameter. | Copper oxides; Superexchange | 1995-12 |
1 - 25 of 7