Beispiel #1
0
from project import settings
from project import Structure, PhysicalSystem
from project import generate_pwscf, Job
from project import ProjectManager

# set global parameters of project suite
settings(
    pseudo_dir='./pseudopotentials',  # directory with pseudopotentials
    generate_only=0,  # only generate input files, T/F
    status_only=0,  # only show run status, T/F
    machine='node16'  # local machine is 16 core workstation
)

# describe the physical system
T_structure = Structure()  # empty structure
T_structure.read_xyz('./Ge_T_16.xyz')  # read in Ge T interstitial structure

T_structure.reset_axes([  # specify cell axes (in Angstrom)
    [5.66, 5.66, 0.], [0., 5.66, 5.66], [5.66, 0., 5.66]
])

T_system = PhysicalSystem(  # make the physical system
    structure=T_structure,  # out of the T interstitial structure
    Ge=4  # pseudo-Ge has 4 valence electrons
)

# specify MP k-point grids for successive relaxations
supercell_kgrids = [
    (1, 1, 1),  #   1 k-point
    (2, 2, 2),  #   8 k-points
Beispiel #2
0
from qmcpack_calculations import basic_qmc

#general settings for the project suite
settings(
    pseudo_dir='./pseudopotentials',  # directory with all pseudopotentials
    sleep=3,  # check on runs every 'sleep' seconds
    generate_only=0,  # only make input files
    status_only=0,  # only show status of runs
    machine='node16',  # local machine is 16 core workstation
)

#generate the C20 physical system
# specify the xyz file
structure_file = 'c20.cage.xyz'
# make an empty structure object
structure = Structure()
# read in the xyz file
structure.read_xyz(structure_file)
# place a bounding box around the structure
structure.bounding_box(
    box='cubic',  # cube shaped cell
    scale=1.5  # 50% extra space
)
# make it a gamma point cell
structure.add_kmesh(
    kgrid=(1, 1, 1),  # Monkhorst-Pack grid
    kshift=(0, 0, 0)  # and shift
)
# add electronic information
c20 = PhysicalSystem(
    structure=structure,  # C20 structure