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yourne

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[ÇóÖú] ÓÃATK³õ²½¼ÆË㱨´í

ʹÓÃnew calculator,£¬Ñ¡ATK-DFT,°æ±¾11.2.2£¬Ã¿´Î¶¼Á¢¼´³öÏÖÈçϱ¨´í£º
** Back Engine Exception 541 : Diagonalization error, overlap matrix not positive definite, try to increase interaction_max_range
** Location : mathutils.cpp:1062
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guohuazhong

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2Â¥2012-11-06 19:06:15
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yourne

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2Â¥: Originally posted by guohuazhong at 2012-11-06 19:06:15
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# -------------------------------------------------------------
# Bulk configuration
# -------------------------------------------------------------

# Set up lattice
lattice = Hexagonal(3.0292*Angstrom, 3.2284*Angstrom)

# Define elements
elements = [Titanium, Boron, Boron, Titanium, Titanium, Titanium, Titanium,
            Titanium, Titanium, Titanium]

# Define coordinates
cartesian_coordinates = [[ 0.        ,  0.        ,  0.        ],
                         [ 1.5146    ,  0.87462961,  1.6142    ],
                         [ 1.5146    , -0.87462961,  1.6142    ],
                         [ 1.5146    , -2.62336415,  0.        ],
                         [ 1.5146    ,  2.62336415,  0.        ],
                         [ 3.0292    ,  0.        ,  0.        ],
                         [ 3.0292    ,  0.        ,  3.2284    ],
                         [ 1.5146    , -2.62336415,  3.2284    ],
                         [ 0.        ,  0.        ,  3.2284    ],
                         [ 1.5146    ,  2.62336415,  3.2284    ]]*Angstrom

# Set up configuration
bulk_configuration = BulkConfiguration(
    bravais_lattice=lattice,
    elements=elements,
    cartesian_coordinates=cartesian_coordinates
    )

# -------------------------------------------------------------
# Calculator
# -------------------------------------------------------------
#----------------------------------------
# Basis Set
#----------------------------------------
basis_set = GGABasis.DoubleZeta

#----------------------------------------
# Exchange-Correlation
#----------------------------------------
exchange_correlation = GGA.PBE

numerical_accuracy_parameters = NumericalAccuracyParameters(
    grid_mesh_cutoff=300.0*eV,
    k_point_sampling=(3, 3, 3),
    )

calculator = LCAOCalculator(
    basis_set=basis_set,
    exchange_correlation=exchange_correlation,
    numerical_accuracy_parameters=numerical_accuracy_parameters,
    )

bulk_configuration.setCalculator(calculator)
bulk_configuration.update()
nlsave('F:/ykc/TiB2.nc', bulk_configuration)

# -------------------------------------------------------------
# Bandstructure
# -------------------------------------------------------------
bandstructure = Bandstructure(
    configuration=bulk_configuration,
    route=['G', 'M', 'L', 'A', 'G', 'K', 'H', 'A'],
    points_per_segment=50,
    bands_above_fermi_level=All
    )
nlsave('F:/ykc/TiB2.nc', bandstructure)
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3Â¥2012-11-06 20:40:19
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kaypu

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yourne: ½ð±Ò+1, ¡ïÓаïÖú 2012-12-05 09:26:04
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