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Title: Local volume effects in the generalized pseudopotential theory

Abstract

The generalized pseudopotential theory (GPT) is a compelling approach for deriving real-space transferable interatomic potentials. Using a coarse-grained electronic structure, one can explicitly determine the pair ion-ion and multi-ion interactions in simple and transition metals. While successful in determining bulk properties, in central force metals the GPT fails to describe crystal defects for which there is a significant local volume change. A previous paper [J. A. Moriarty and R. Phillips, Phys. Rev. Lett. 66, 3036 (1991)] found that by allowing the GPT total energy to depend upon some spatially averaged local electron density, the energetics of vacancies and surfaces could be calculated within experimental ranges. In this paper, we develop the formalism further by explicitly calculating the forces and stress tensor associated with this total energy. We call this scheme the adaptive GPT (aGPT) and it is capable of both molecular dynamics (MD) and molecular statics. We apply the aGPT to vacancy formation, divacancy binding, and stacking faults in hcp Mg. We also calculate the local electron density corrections to the bulk elastic constants and phonon dispersion for which there is refinement over the baseline GPT treatment. Furthermore, we demonstrate aGPT-MD simulation through the calculation of thermal expansion in magnesiummore » to 700 K.« less

Authors:
 [1];  [1];  [2]
  1. King's College London (United Kingdom)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1557065
Report Number(s):
LLNL-JRNL-761045
Journal ID: ISSN 2469-9950; PRBMDO; 949102
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 99; Journal Issue: 21; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Skinner, Guy C. G., Paxton, Anthony T., and Moriarty, John A. Local volume effects in the generalized pseudopotential theory. United States: N. p., 2019. Web. doi:10.1103/PhysRevB.99.214107.
Skinner, Guy C. G., Paxton, Anthony T., & Moriarty, John A. Local volume effects in the generalized pseudopotential theory. United States. https://doi.org/10.1103/PhysRevB.99.214107
Skinner, Guy C. G., Paxton, Anthony T., and Moriarty, John A. Wed . "Local volume effects in the generalized pseudopotential theory". United States. https://doi.org/10.1103/PhysRevB.99.214107. https://www.osti.gov/servlets/purl/1557065.
@article{osti_1557065,
title = {Local volume effects in the generalized pseudopotential theory},
author = {Skinner, Guy C. G. and Paxton, Anthony T. and Moriarty, John A.},
abstractNote = {The generalized pseudopotential theory (GPT) is a compelling approach for deriving real-space transferable interatomic potentials. Using a coarse-grained electronic structure, one can explicitly determine the pair ion-ion and multi-ion interactions in simple and transition metals. While successful in determining bulk properties, in central force metals the GPT fails to describe crystal defects for which there is a significant local volume change. A previous paper [J. A. Moriarty and R. Phillips, Phys. Rev. Lett. 66, 3036 (1991)] found that by allowing the GPT total energy to depend upon some spatially averaged local electron density, the energetics of vacancies and surfaces could be calculated within experimental ranges. In this paper, we develop the formalism further by explicitly calculating the forces and stress tensor associated with this total energy. We call this scheme the adaptive GPT (aGPT) and it is capable of both molecular dynamics (MD) and molecular statics. We apply the aGPT to vacancy formation, divacancy binding, and stacking faults in hcp Mg. We also calculate the local electron density corrections to the bulk elastic constants and phonon dispersion for which there is refinement over the baseline GPT treatment. Furthermore, we demonstrate aGPT-MD simulation through the calculation of thermal expansion in magnesium to 700 K.},
doi = {10.1103/PhysRevB.99.214107},
journal = {Physical Review B},
number = 21,
volume = 99,
place = {United States},
year = {Wed Jun 19 00:00:00 EDT 2019},
month = {Wed Jun 19 00:00:00 EDT 2019}
}

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Works referenced in this record:

Density-functional formulation of the generalized pseudopotential theory
journal, September 1977


Density-functional formulation of the generalized pseudopotential theory. II
journal, August 1982


Analytic representation of multi-ion interatomic potentials in transition metals
journal, July 1990


Robust quantum-based interatomic potentials for multiscale modeling in transition metals
journal, March 2006

  • Moriarty, John A.; Benedict, Lorin X.; Glosli, James N.
  • Journal of Materials Research, Vol. 21, Issue 3
  • DOI: 10.1557/jmr.2006.0070

First-principles interatomic potentials for transition-metal aluminides: Theory and trends across the 3 d series
journal, October 1997


First-principles interatomic potentials for transition-metal surfaces
journal, June 1991


Density-dependent pair potentials and the compressibility problem
journal, March 1987


Phonons in nontransition metals [Фононы в непереходных металлах]
journal, January 1974


Phonons in nontransition metals
journal, February 1974


Phase diagram and thermodynamic properties of solid magnesium in the quasiharmonic approximation
journal, November 1993


First-principles temperature-pressure phase diagram of magnesium
journal, March 1995


Ab initio thermoelasticity of magnesium
journal, February 1999


Elastic Constants of Magnesium from 4.2°K to 300°K
journal, August 1957


General Theory of Pseudopotentials
journal, July 1962


Analytic expression for the dielectric screening function of strongly coupled electron liquids at metallic and lower densities
journal, December 1981


Accurate spin-dependent electron liquid correlation energies for local spin density calculations: a critical analysis
journal, August 1980

  • Vosko, S. H.; Wilk, L.; Nusair, M.
  • Canadian Journal of Physics, Vol. 58, Issue 8
  • DOI: 10.1139/p80-159

Accurate atomistic simulation of ( a /2) 〈111〉 screw dislocations and other defects in bcc tantalum
journal, May 2001


Representations of the local atomic density
journal, September 1998

  • Finnis, Michael W.; Walker, Alison B.; Gumbsch, Peter
  • Journal of Physics: Condensed Matter, Vol. 10, Issue 36
  • DOI: 10.1088/0953-8984/10/36/009

Forces in Molecules
journal, August 1939


Three-Body Forces in the Lattice Dynamics of Beryllium
journal, December 1973


Anharmonic force constants extracted from first-principles molecular dynamics: applications to heat transfer simulations
journal, May 2014


High-precision sampling for Brillouin-zone integration in metals
journal, August 1989


Accurate and simple analytic representation of the electron-gas correlation energy
journal, June 1992


Molecular dynamics simulations at constant pressure and/or temperature
journal, February 1980

  • Andersen, Hans C.
  • The Journal of Chemical Physics, Vol. 72, Issue 4
  • DOI: 10.1063/1.439486

Canonical dynamics: Equilibrium phase-space distributions
journal, March 1985


Polymorphic transitions in single crystals: A new molecular dynamics method
journal, December 1981

  • Parrinello, M.; Rahman, A.
  • Journal of Applied Physics, Vol. 52, Issue 12
  • DOI: 10.1063/1.328693

Ab initio study on divacancy binding energies in aluminum and magnesium
journal, November 2003


The Formation Energy of Vacancies in Aluminium and Magnesium
journal, June 1976

  • Tzanetakis, P.; Hillairet, J.; Revel, G.
  • physica status solidi (b), Vol. 75, Issue 2
  • DOI: 10.1002/pssb.2220750205

Intrinsic stacking faults in body-centred cubic crystals
journal, October 1968


Comprehensive first-principles study of stable stacking faults in hcp metals
journal, January 2017


Prediction of a {1122} hcp stacking fault using a modified generalized stacking-fault calculation
journal, November 1997


Isothermal-isobaric molecular dynamics using stochastic velocity rescaling
journal, February 2009

  • Bussi, Giovanni; Zykova-Timan, Tatyana; Parrinello, Michele
  • The Journal of Chemical Physics, Vol. 130, Issue 7
  • DOI: 10.1063/1.3073889

Fast Parallel Algorithms for Short-Range Molecular Dynamics
journal, March 1995