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Volumn 61, Issue 1, 2000, Pages 906-919

Lattice-switch Monte Carlo method

Author keywords

[No Author keywords available]

Indexed keywords

FREE ENERGY;

EID: 0001486374     PISSN: 1063651X     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevE.61.906     Document Type: Article
Times cited : (86)

References (63)
  • 2
    • 85036170574 scopus 로고    scopus 로고
    • Most, perhaps all, of the methods referred to here may also be realized within the framework of molecular dynamics
    • Most, perhaps all, of the methods referred to here may also be realized within the framework of molecular dynamics.
  • 6
    • 85036211132 scopus 로고    scopus 로고
    • A path is defined by a sequence of values of either some macroscopic observable or some parameter (Formula presented), which controls a thermodynamic field or a model parameter
    • A path is defined by a sequence of values of either some macroscopic observable or some parameter (Formula presented), which controls a thermodynamic field or a model parameter.
  • 7
    • 85036197018 scopus 로고    scopus 로고
    • some instances one needs to make use of separate reference systems for each phase
    • In some instances one needs to make use of separate reference systems for each phase.
  • 8
    • 85036337575 scopus 로고    scopus 로고
    • A full survey is not appropriate here; we note only some examples. References 9 and 10 both use multistage (integration) methods involving reference paths—the former to an Einstein solid, and the latter to a single-occupancy-cell model of an ideal gas–to study the fcc-hcp phase behavior of hard spheres. Reference 11 describes a study of the fcc-bcc phase behavior of Lennard-Jones systems, using a multistage (overlap) method applied to a nonphysical interphase path, with the (Formula presented) parameter 6 indexing a configurational energy that interpolates between those of the two structures. This method has been widely used (see, e.g., Ref. 12). Reference 13 describes a physical interphase path linking NaCl and CsCl structures, but does not utilize the path for a free-energy-difference calculation. The “lattice-shear” method described in Ref. 14, and applied to hard spheres, is a natural refinement of Ref. 13 in which a single-stage sampling procedure is used to explore a path constructed out of a series of mutually sheared lattices that interpolate between the lattices of interest
    • A full survey is not appropriate here; we note only some examples. References 9 and 10 both use multistage (integration) methods involving reference paths—the former to an Einstein solid, and the latter to a single-occupancy-cell model of an ideal gas–to study the fcc-hcp phase behavior of hard spheres. Reference 11 describes a study of the fcc-bcc phase behavior of Lennard-Jones systems, using a multistage (overlap) method applied to a nonphysical interphase path, with the (Formula presented) parameter 6 indexing a configurational energy that interpolates between those of the two structures. This method has been widely used (see, e.g., Ref. 12). Reference 13 describes a physical interphase path linking NaCl and CsCl structures, but does not utilize the path for a free-energy-difference calculation. The “lattice-shear” method described in Ref. 14, and applied to hard spheres, is a natural refinement of Ref. 13 in which a single-stage sampling procedure is used to explore a path constructed out of a series of mutually sheared lattices that interpolate between the lattices of interest.
  • 21
    • 85036194509 scopus 로고    scopus 로고
    • Since, by definition, the end points of an interphase path lie in different phases, the associated macroscopic property may reasonably be described as an order parameter
    • Since, by definition, the end points of an interphase path lie in different phases, the associated macroscopic property may reasonably be described as an order parameter.
  • 22
    • 85036178379 scopus 로고    scopus 로고
    • The nature of the configurations visited along a path is not generally predictable a priori from the choice of order parameter. One may say only that the configurations sampled at a given point on the path will be those which have measurable canonical probabilities conditioned on that macrostate, and which are, moreover, accessible on the relevant time scales
    • The nature of the configurations visited along a path is not generally predictable a priori from the choice of order parameter. One may say only that the configurations sampled at a given point on the path will be those which have measurable canonical probabilities conditioned on that macrostate, and which are, moreover, accessible on the relevant time scales.
  • 23
    • 85036395080 scopus 로고    scopus 로고
    • The interfacial free energy emerges as a by-product—and in some cases 22 may actually be the principal focus of interest
    • The interfacial free energy emerges as a by-product—and in some cases 22 may actually be the principal focus of interest.
  • 27
    • 85036172139 scopus 로고    scopus 로고
    • It might work acceptably well if the dynamics of the interface between the two phases is favorable: systems with martensitic phase transitions may fall into this category: Z. Nishiyama, Martensitic Transformations (Academic, New York, 1978). Note also that the special case in which the structural phase transition involves no change of symmetry can be handled within the standard multicanonical framework: see Ref. 26
    • It might work acceptably well if the dynamics of the interface between the two phases is favorable: systems with martensitic phase transitions may fall into this category: Z. Nishiyama, Martensitic Transformations (Academic, New York, 1978). Note also that the special case in which the structural phase transition involves no change of symmetry can be handled within the standard multicanonical framework: see Ref. 26.
  • 29
    • 85036383293 scopus 로고    scopus 로고
    • The conjugate of a given configuration is the configuration associated with the sameset of displacements attached to the other set of lattice vectors
    • The conjugate of a given configuration is the configuration associated with the sameset of displacements attached to the other set of lattice vectors.
  • 30
    • 85036397542 scopus 로고    scopus 로고
    • The general defining characteristic of the gateway configurations is that a LS operation, launched from within this set, will be accepted with a probability sufficient to make the attempt worthwhile
    • The general defining characteristic of the gateway configurations is that a LS operation, launched from within this set, will be accepted with a probability sufficient to make the attempt worthwhile.
  • 31
    • 85036397613 scopus 로고    scopus 로고
    • A configuration is energy matched (to its conjugate) if the difference between its energy and that of its conjugate is small, on the scale of (Formula presented)
    • A configuration is energy matched (to its conjugate) if the difference between its energy and that of its conjugate is small, on the scale of (Formula presented).
  • 34
    • 0000363383 scopus 로고
    • edited by J.P. Hansen, D. Leveesque, and J. Zinn-Justin, Elsevier, Amsterdam
    • P.N. Pusey, in Liquids Freezing and the Glass Transition, edited by J.P. Hansen, D. Leveesque, and J. Zinn-Justin (Elsevier, Amsterdam, 1991) p. 763.
    • (1991) Liquids Freezing and the Glass Transition , pp. 763
    • Pusey, P.N.1
  • 35
    • 85036279344 scopus 로고    scopus 로고
    • its most general context the LS is the basis for estimating the differences between the free energy (Helmholtz or Gibbs) of two crystalline phases; in the case of hard sphere systems, at constant density, this free energy difference is purely entropic
    • In its most general context the LS is the basis for estimating the differences between the free energy (Helmholtz or Gibbs) of two crystalline phases; in the case of hard sphere systems, at constant density, this free energy difference is purely entropic.
  • 37
    • 85036348245 scopus 로고    scopus 로고
    • The hcp “lattice” is not a “Bravais lattice”; see e.g., Ref. 36, p. 79
    • The hcp “lattice” is not a “Bravais lattice”; see e.g., Ref. 36, p. 79.
  • 41
    • 85036385212 scopus 로고    scopus 로고
    • The divergence is an artifact of the classical character of the model
    • The divergence is an artifact of the classical character of the model.
  • 42
    • 85036355471 scopus 로고    scopus 로고
    • As detailed in Ref. 38 the argument leading to Eq. (10a) actually entails a rescaling of the displacement coordinates by an (Formula presented)-dependent factor
    • As detailed in Ref. 38 the argument leading to Eq. (10a) actually entails a rescaling of the displacement coordinates by an (Formula presented)-dependent factor.
  • 43
    • 85036353582 scopus 로고    scopus 로고
    • The “visualization” exercise has its limitations. The dodecahedra (and the lattice spacing) should be thought of as “infinitely large” compared to the mean separation of adjacent faces
    • The “visualization” exercise has its limitations. The dodecahedra (and the lattice spacing) should be thought of as “infinitely large” compared to the mean separation of adjacent faces.
  • 44
    • 85036229068 scopus 로고    scopus 로고
    • We subsume a factor of (Formula presented) into the “pressure” (Formula presented)
    • We subsume a factor of (Formula presented) into the “pressure” (Formula presented).
  • 45
    • 85036162715 scopus 로고    scopus 로고
    • If the interparticle potential is not of the hard-sphere form [Eq. (1)] the “perfect crystal” configurations (classical ground states) of the two structures will generally have different energies. But one may handle the effects of this energy mismatch quite simply, by attaching different multicanonical weights to the gateway configurations of the two structures
    • If the interparticle potential is not of the hard-sphere form [Eq. (1)] the “perfect crystal” configurations (classical ground states) of the two structures will generally have different energies. But one may handle the effects of this energy mismatch quite simply, by attaching different multicanonical weights to the gateway configurations of the two structures.
  • 46
    • 85036360139 scopus 로고    scopus 로고
    • The sign convention here has no deep significance. Defining (Formula presented) so that it has different signs in the two phases simply allows us to make a visually clear distinction (Fig. 88) between the contributions which each phase makes to the (Formula presented) distribution
    • The sign convention here has no deep significance. Defining (Formula presented) so that it has different signs in the two phases simply allows us to make a visually clear distinction (Fig. 88) between the contributions which each phase makes to the (Formula presented) distribution.
  • 47
    • 85036432838 scopus 로고    scopus 로고
    • fact, within the framework of periodic boundary conditions, the second generalization subsumes the first. Thus the various lattice-to-lattice mappings discussed in Sec. IV A can all be thought as a single mapping but with different hcp T matrices [Eq. (19)], chosen to interchange appropriate displacements
    • In fact, within the framework of periodic boundary conditions, the second generalization subsumes the first. Thus the various lattice-to-lattice mappings discussed in Sec. IV A can all be thought as a single mapping but with different hcp T matrices [Eq. (19)], chosen to interchange appropriate displacements.
  • 48
    • 85036138083 scopus 로고    scopus 로고
    • the absence of any phase-defining constraint on the configurational integral specified in Eq. (5), the integral extends over all configurations compatible with the boundary conditions
    • In the absence of any phase-defining constraint on the configurational integral specified in Eq. (5), the integral extends over all configurations compatible with the boundary conditions.
  • 49
    • 85036407472 scopus 로고    scopus 로고
    • This density value was chosen to coincide with one of those studied in Ref. 9
    • This density value was chosen to coincide with one of those studied in Ref. 9.
  • 50
    • 85036259537 scopus 로고    scopus 로고
    • This conclusion is in qualitative accord with that of Ref. 14, although we find the effects of next-neighbor encounters to be somewhat smaller than is reported there
    • This conclusion is in qualitative accord with that of Ref. 14, although we find the effects of next-neighbor encounters to be somewhat smaller than is reported there.
  • 51
    • 0003431642 scopus 로고
    • edited by C.R.A. Catlow, C.S. Parker, and M.P. Allen, Kluwer Academic, Dordrecht
    • D. Frenkel, in Computer Modelling of Fluids, Polymers and Solids, edited by C.R.A. Catlow, C.S. Parker, and M.P. Allen (Kluwer Academic, Dordrecht, 1990), p. 83.
    • (1990) Computer Modelling of Fluids, Polymers and Solids , pp. 83
    • Frenkel, D.1
  • 54
    • 0000329236 scopus 로고
    • These approximations are surprisingly good, except close to melting. See inter alia D.A. Young and B.J. Alder, J. Chem. Phys. 60, 1254 (1974)
    • (1974) J. Chem. Phys. , vol.60 , pp. 1254
    • Young, D.A.1    Alder, B.J.2
  • 60
    • 0000818332 scopus 로고
    • show that predictions for the phase diagram of a Lennard Jones solid depend extremely sensitively on the fcc-hcp hard-sphere entropy difference
    • Y. Choi, T. Ree, and F.H. Ree, J. Chem. Phys. 99, 9917 (1993). show that predictions for the phase diagram of a Lennard Jones solid depend extremely sensitively on the fcc-hcp hard-sphere entropy difference.
    • (1993) J. Chem. Phys. , vol.99 , pp. 9917
    • Choi, Y.1    Ree, T.2    Ree, F.H.3


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