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    Legal Notice 		John E. Pask's Picture John E. Pask
      Lawrence Livermore National Laboratory
      7000 East Ave., L-045
      Livermore, CA 94550 USA

      E-mail: pask1
      Phone: (925) 422-8392
      Fax: (925) 422-2851


Research Interests
Development of ab initio electronic-structure methods, positron calculation algorithms and implementations, and numerical methods. Finite-element methods; large-scale iterative eigen-solution, linear system solution, and optimization methods. Application of ab initio methods to defects, quantum structures, surfaces, and bulk materials. Transition-metal compounds, actinides, magnetic semiconductors, and half-metals.
Personal Background
Dr. Pask joined the Metals and Alloys group at the Lawrence Livermore National Laboratory in 2001. He received his undergraduate degree in physics from the University of California, Davis in 1988. He accepted a position at the Naval Nuclear Power School in Orlando, Florida in 1988, where he taught mathematics, physics, and reactor dynamics to naval officers and civilian engineers. He served as Director of the Mathematics and Physics division from 1993-94 and was a recipient of the Navy Achievement Medal in 1994. While at Nuclear Power School, he did graduate work at the University of Central Florida, where he received an M.S. in mathematics in 1994. Dr. Pask received his Ph.D. in physics from the University of California, Davis in 1999. His thesis work, with Prof. Barry Klein, focused on the development and implementation of a new finite-element based approach to large-scale ab initio electronic-structure calculations. During the latter part of his graduate studies, he worked with Dr. Philip Sterne at the Materials Research Institute of the Lawrence Livermore National Laboratory on the extension and application of the finite-element based electronic-structure method to large-scale ab initio positron calculations. He received the Nicholas Metropolis Award for Outstanding Doctoral Thesis Work in Computational Physics from the American Physical Society in 2001. Dr. Pask was awarded a National Research Council Associateship in 1999 to continue work on electronic-structure method development and applications with Dr. David Singh at the Naval Research Laboratory in Washington, DC. While there, he studied transition-metal compounds, using the full-potential linearized augmented planewave method; and continued work on the finite-element electronic-structure method and associated large-scale positron applications. At Lawrence Livermore National Laboratory, Dr. Pask continues work on ab initio electronic-structure method development and applications.
Recent Publications
  1. "Half-metallic digital ferromagnetic heterostructure composed of a delta-doped layer of Mn in Si," M.C. Qian, C.Y. Fong, K. Liu, W.E. Pickett, J.E. Pask, and L.H. Yang, Phys. Rev. Lett. 96, 027211 (2006).
  2. "Finite elements in ab initio electronic-structure calculations," J.E. Pask and P.A. Sterne, in Handbook of Materials Modeling, S. Yip (ed.), p. 423, Springer, Dordrecht, 2005. (Review)
  3. "Finite element methods in ab initio electronic structure calculations," J.E. Pask and P.A. Sterne, Modelling Simul. Mater. Sci. Eng. 13, R71 (2005). (Review)
  4. "Real-space formalism for the electrostatic potential and total energy of solids," J.E. Pask and P.A. Sterne, Phys. Rev. B 71, 013101 (2005).
  5. "Spin-polarized ballistic transport in a thin superlattice of zincblende half metallic compounds," M.C. Qian, C.Y. Fong, W.E. Pickett, J. E. Pask, L.H. Yang, and S. Dag, Phys. Rev. B 71, 012414 (2005).
  6. "Six low-strain zincblende half metals: An ab initio investigation," J.E. Pask, L.H. Yang, C.Y. Fong, W.E. Pickett, and S. Dag, Phys. Rev. B 67, 224420 (2003).
Metals & Alloys | Condensed Matter Physics | Physics & Adv. Tech. | LLNL

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