Zobrazeno 1 - 9
of 9
pro vyhledávání: '"J. C. Boettger"'
Publikováno v:
International Journal of Quantum Chemistry. 18:585-596
Initially the Hartree-Fock approach to solids containing narrow occupied bands is reviewed. The presence of local states and hopping conductivity is considered in the single determinant limit. The consequences of such considerations are discussed for
Autor:
J C Boettger, B I Dunlap
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 29:4907-4913
Large basis set local-density-functional calculations on fullerenes, graphene and graphite suggest that fullerene stability increases monotonically with the number of carbon atoms (N), and is nearly linear in 1/N. is less stable energetically than an
Time‐resolved shock‐wave experiments on granite and numerical simulations using dynamic phase mixing
Publikováno v:
Journal of Applied Physics. 78:5155-5165
A recently developed model for simulating the dynamic behavior of silicate materials is applied to the loading and unloading properties of granite. Four time‐resolved wave profile measurements on granite are presented and used to supplement Hugonio
Autor:
J. C. Boettger
Publikováno v:
Journal of Applied Physics. 72:5500-5508
A new model has been developed to describe the {alpha}-quartz to stishovite phase transition in silica under shock-loading conditions. During hydrodynamic simulations, individual global equations of state for the {alpha}-quartz and stishovite phases
Autor:
J. C. Boettger, S. B. Trickey
Publikováno v:
Physical Review B. 75
Publikováno v:
AIP Conference Proceedings.
We discuss the development of accurate equations of state by combining electronic structure theory for the lattice vibrations and electronic excitations with an empirical static lattice electronic energy (cold curve). We present applications to the f
Autor:
J. C. Boettger, S. B. Trickey
Publikováno v:
Computer Physics Communications. 32:361-365
A novel utilization of the multiparameter dynamical convergence accelerator introduced by Pratt for atomic electronic structure calculations is presented for the Wang-Callaway LCGTO energy band codes. The instabilities in the original Pratt technique
Autor:
S. B. Trickey, J. C. Boettger
Publikováno v:
Physical Review B. 29:6425-6433
Callaway, Zou, and Bagayoko [Phys. Rev. B 27, 631 (1983)] (CZB) have presented algorithms for extracting crystalline total energies from Fourier-transform, linear combinations of Gaussian-type orbitals (LCGTO's), local-density-functional electronic-s
Autor:
J. C. Boettger, A. B. Kunz
Publikováno v:
Physical Review B. 27:1359-1362
Ab initio energy bands have been obtained for CdO via the self-consistent Hartree-Fock method. Correlation has been included in the form of polarization and relaxation corrections. The calculated band structure is compared to experiment and previous