Publications

M. Hanfland, K. Syassen, S. Fahy, S. G. Louie, and M. L. Cohen Pressure dependence of the first-order Raman mode in diamond Physical Review B 31, 6896-8 (1985).   M. Hanfland, K. Syassen, S. Fahy, S. G. Louie, and M. L. Cohen The first-order Raman mode of diamond under pressure Physica 139, 516-9 (1986).   S. Fahy, S. G. Louie, and M. L. Cohen Pseudopotential total-energy study of the transition from rhombohedral graphite to diamond Physical Review B 34, 1191-9 (1986).   S. Fahy, K. J. Chang, S. G. Louie, and M. L. Cohen Pressure coefficients of band gaps in diamond Physical Review B 35, 5856-9 (1987).   S. Fahy, S. G. Louie, and M. L. Cohen Theoretical total-energy study of the transformation of graphite into hexagonal diamond Physical Review B 35, 7623-6 (1987).   S. Fahy and S. G. Louie High-pressure structural and electronic properties of carbon Physical Review B 36, 3373-85 (1987).   U. Walter, S. Fahy, A. Zettl, S. G. Louie, M. L. Cohen, P. Tejedor, and A. M. Stacy Probing electronic density of states and magnetic interactions at the rare-earth site in ErBa_2Cu_3O_7 Physical Review B 36, 8899-901 (1987).   C. Kittel, S. Fahy, and S. G. Louie Magnetic screening by a thin superconducting surface layer Physical Review B 37, 642-3 (1988).   S. Fahy, C. Kittel, and S. G. Louie Electromagnetic screening by metals American Journal of Physics 56, 989-92 (1988).   S. Fahy and S. G. Louie Variational Monte Carlo sampling of the superconducting ground state Lawrence Berkeley Laboratory Report No. 24318 (1987)   R. M. Wentzcovitch, S. Fahy, M. L. Cohen, and S. G. Louie Ab initio study of graphite to diamond-like transitions in BN Physical Review B 38, 6191-5 (1988).   S. Fahy, X. W. Wang, and S. G. Louie Variational quantum Monte Carlo non-local pseudopotential approach to solids: cohesive and structural properties of diamond Physical Review Letters 61, 1631-4 (1988).   S. Fahy, X. W. Wang, and S. G. Louie Quantum Monte Carlo calculation of the properties of atomic carbon and diamond Proc. 19th Int. Conf. Phys. of Semicond., edited by W. Zawadzki, Institute of Physics, Warsaw, Poland, Vol. 2, p. 845-8 (1988).   X. Zhu, S. Fahy, and S. G. Louie Ab initio calculation of the pressure coefficients of band gaps of silicon: Comparison of local-density approximation and quasiparticle results Physical Review B 39, 7840-7 (1989).   S. Fahy and D. R. Hamann Electronic and Structural Properties of Ca Si_2 Physical Review B 41, 7587-92 (1990).   S. Fahy, X. W. Wang, and S. G. Louie Variational quantum Monte Carlo non-local pseudopotential approach to solids: formulation and application to diamond, graphite, and silicon Physical Review B 42, 3503-22 (1990).   D. R. Hamann and S. Fahy Energy measurement in auxiliary-field many-electron calculations Physical Review B 41, 11352-63 (1990).   S. Fahy, X. W. Wang, and S. G. Louie Pair-correlation functions and single-particle occupation numbers in diamond and silicon Physical Review Letters 65, 1478-81 (1990).   S. Fahy and D. R. Hamann Positive-projection Monte Carlo simulation: a new variational approach to strongly interacting fermion systems Physical Review Letters 65, 3437-40 (1990).   X. W. Wang, J. Zhu, S. G. Louie, and S. Fahy Magnetic structure and equation of state of bcc solid hydrogen: a variational quantum Monte Carlo study Physical Review Letters 65, 2414-7 (1990).   S. Fahy and D. R. Hamann Diffusive behavior of states in the Hubbard-Stratonovitch transformation Physical Review B 43, 765-79 (1991).   S. Fahy and D. R. Hamann Transition from chaotic to non-chaotic behavior in randomly driven systems Physical Review Letters 69, 761-4 (1992).   D. R. Hamann and S. Fahy Long-Range Interactions in auxiliary-field many-electron calculations Physical Review B 47, 1717-25 (1993).   S. Fahy Ground State Projection with Auxiliary Fields: Imaginary-Time and Simulation-Time Dynamics Computer Simulation Studies in Condensed Matter Physics VI, edited by D. P. Landau, K. K. Mon, and H.-B. Schuttler (Springer, Berlin, 1993).   S. Fahy Ground-State Projection using Auxiliary Fields Quantum Monte Carlo Methods in Condensed Matter Physics, edited by M. Suzuki (World Scientific, Singapore, 1993).   W. Wu and S. Fahy Molecular Dynamics study of single-atom radiation damage in diamond Physical Review B 49, 3030-5 (1994).   S. Fahy and R. Merlin Reversal of Ferroelectric Domains by Ultra-short optical pulses Physical Review Letters 73, 1122-5 (1994).   A. P. Morrison, J. D. Lambkin, E. O'Sullivan, and S. Fahy A Simple Effective Mass model to include the effects of Gamma-X mixing in multiquantum Barriers SPIE Optical Engineering 33, 3926-9 (1994).   S. Fahy Strain-induced shifts in the infra-red absorption peaks of Boron Nitride Physical Review B (Rapid Communications) 51, 12873-6 (1995).   Y. Liu, G. A. Garrett, A. Frenkel, J. F. Whitaker, S. Fahy, C. Uher, and R. Merlin Impulsive Light Scattering by Coherent phonons in LaAlO_3: Disorder and Boundary Effects Physical Review Letters 75, 334-7 (1995).   S. Fahy Quantum Monte Carlo Methods Quantum Theory of Real Materials, edited by J. R. Chelikowsky and S. G. Louie (Kluwer Academic Publishers, Mass., USA, 1995).   S. Fahy and R. Merlin Data storage using pulsed optical domain reversal U.S. Patent No. 5,477,519 (Dec. 19, 1995).   M. Menchi, A. Bosin, and S. Fahy Variational Monte Carlo on a parallel architecture: an application to graphite Material Research Society Symposium Proceedings 408, 169-74 (1996).   A. Malatesta, S. Fahy, and G. B. Bachelet Variational quantum Monte Carlo calculation of the cohesive properties of cubic boron nitride Physical Review B 56, 12201-10 (1997).   S. Fahy, C. A. Taylor, and R. Clarke Islanding and strain-induced shifts in the infrared absorption peaks of cubic boron nitride thin films Physical Review B 56, 12573-80 (1997).   S. Fahy, S. Twohig, M. Stefansson, and D. Courtney Onset of Chaos in a Pendulum Coupled to a Thermal Environment Physical Review E 57, 2799-810 (1998).   P. Tangney and S. Fahy Calculations of the A1 phonon frequency in photoexcited tellurium Physical Review Letters 82, 4340-3 (1999).   S. Fahy Variational Monte Carlo in Solids Variational Monte Carlo Methods in Physics and Chemistry, edited by M. P. Nightingale and C. J. Umrigar (Kluwer, Dordrecht, 1999).   C. Filippi and S. Fahy Optimal orbitals from energy fluctuations in correlated wave functions J. Chem. Phys. 112, 3523-31 (2000).   S. Fahy and J. C. Greer Alloy corrections to the virtual crystal approximation and explicit band structure calculations for silicon-germanium Mat. Sci. Semicon. Proc. 3, 109-14 (2000). D. Prendergast, M. Nolan, C. Filippi, S. Fahy and J. C. Greer Impact of electron-electron cusp on configuration interaction energies J. Chem. Phys. 115, 1626-34 (2001). P. Tangney and S. Fahy Density-functional theory approach to ultra-fast laser excitation of semiconductors: Application to the A(1) phonon in tellurium Phys. Rev. B 65, 054302 (2002). F. Schautz and S. Fahy Optimization of configuration interaction coefficients in multi-determinant Jastrow-Slater wave functions J. Chem. Phys. 116, 3533-39 (2002)