STM

Controls the printing of cubes for the generation of STM images. [Edit on GitHub]

Subsections

• EACH

Keywords

• SECTION_PARAMETERS

• ADD_LAST

• APPEND

• BIAS

• COMMON_ITERATION_LEVELS

• FILENAME

• LOG_PRINT_KEY

• NLUMO

• REF_ENERGY

• STRIDE

• TH_TORB

• __CONTROL_VAL

Keyword descriptions

SECTION_PARAMETERS: enum = DEBUG

Lone keyword: SILENT

Usage: silent

Valid values:

• ON

• OFF

• SILENT

• LOW

• MEDIUM

• HIGH

• DEBUG

Level starting at which this property is printed [Edit on GitHub]

ADD_LAST: enum = NO

Usage: ADD_LAST (NO|NUMERIC|SYMBOLIC)

Valid values:

• NO Do not mark last iteration specifically

• NUMERIC Mark last iteration with its iteration number

• SYMBOLIC Mark last iteration with lowercase letter l

If the last iteration should be added, and if it should be marked symbolically (with lowercase letter l) or with the iteration number. Not every iteration level is able to identify the last iteration early enough to be able to output. When this keyword is activated all iteration levels are checked for the last iteration step. [Edit on GitHub]

APPEND: logical = F

Lone keyword: T

append the cube files when they already exist [Edit on GitHub]

BIAS: real = 0.00000000E+000 [eV]

Bias energy for scanning tunneling microscopy (STM) image generation. Orbital densities are summed according to the bias energy. For negative values, states in the range ]EF+bias,EF] are summed, While positive values sum states in the range [EF,EF+bias[. If positive biases are used, sufficiently many unoccupied stated (see ADDED_MOS and NLUMO ) should be computed. [Edit on GitHub]

COMMON_ITERATION_LEVELS: integer = 0

Usage: COMMON_ITERATION_LEVELS

How many iterations levels should be written in the same file (no extra information about the actual iteration level is written to the file) [Edit on GitHub]

FILENAME: string

Usage: FILENAME ./filename

controls part of the filename for output. use __STD_OUT__ (exactly as written here) for the screen or standard logger. use filename to obtain projectname-filename. use ./filename to get filename. A middle name (if present), iteration numbers and extension are always added to the filename. if you want to avoid it use =filename, in this case the filename is always exactly as typed. Please note that this can lead to clashes of filenames. [Edit on GitHub]

LOG_PRINT_KEY: logical = F

Lone keyword: T

Usage: LOG_PRINT_KEY

This keywords enables the logger for the print_key (a message is printed on screen everytime data, controlled by this print_key, are written) [Edit on GitHub]

NLUMO: integer = 0

If the printkey is activated controls the number of additional lumos that are computed to be able to reproduce STM images obtained from positive bias (imaging unoccupied states) [Edit on GitHub]

REF_ENERGY: real = 0.00000000E+000 [eV]

By default the reference energy is the Fermi energy. In order to compare with STS experiments, where specific energy ranges are addressed, here one can set a different reference energy. The energy range is anyway controlled by the BIAS [Edit on GitHub]

STRIDE: integer = 2 2 2

Usage: STRIDE 2 2 2

The stride (X,Y,Z) used to write the cube file (larger values result in smaller cube files). You can provide 3 numbers (for X,Y,Z) or 1 number valid for all components. [Edit on GitHub]

TH_TORB: enum = S

Keyword can be repeated.

Usage: TH_TORB s dz2

Valid values:

• S s orbital

• PX px orbital

• PY py orbital

• PZ pz orbital

• DXY dxy orbital

• DYZ dyz orbital

• DZX dzx orbital

• DX2 x^2 orbital

• DY2 y^2 orbital

• DZ2 z^2 orbital

Tip orbital symmetry in Tersoff-Hamann approximation to compute STM images [Edit on GitHub]

__CONTROL_VAL: integer = 8

hidden parameter that controls storage, printing,… of the print_key [Edit on GitHub]