Eph Tinfile

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eph_Tinfile takes the name of the file containing the parameters to construct the mesh in three dimensions for the electronic system. If this file is provided, then the corresponding electronic parameters need not be provided in input file as those will not be considered. This file has to be prepared in a standard format. This is shown below.

1st line – any comments
2nd line – any comments
3rd line – any comments
4th line – gsx gsy gsz number_of_fdm_steps
5th line – mesh_xlimit_low mesh_xlimit_high
6th line – mesh_ylimit_low mesh_ylimit_high
7th line – mesh_zlimit_low mesh_zlimit_high
8th line – i j k T_e S_e rho_e C_e K_e flag T_dyn_flag
9th line – values corresponding to column headers
10th line – values corresponding to column headers
….
….
Values are provided for the full mesh.
[Note that mesh indices i, j, k must start from 1 not 0.]

Example (mostly used)

#
# 3 lines of comments
#
2 2 2 1
-30.0 30.0
-30.0 30.0
-30.0 30.0
i j k T_e S_e rho_e C_e K_e flag T_dyn_flag
1 1 1 50.0 1.0 1.0 3.5E-01 0.12 0 0
2 1 1 50.0 1.0 1.0 3.5E-01 0.12 0 0
1 2 1 50.0 1.0 1.0 3.5E-01 0.12 0 0
2 2 1 50.0 1.0 1.0 3.5E-01 0.12 0 0
1 1 2 50.0 1.0 1.0 3.5E-01 0.12 0 0
2 1 2 50.0 1.0 1.0 3.5E-01 0.12 0 0
1 2 2 50.0 1.0 1.0 3.5E-01 0.12 0 0
2 2 2 50.0 1.0 1.0 3.5E-01 0.12 0 0

Note (additional uses)

(1) To simulate with an external source term in S_e, at least one value under the 'flag' column must be set equal to 1.

(2) To simulate (non-linear case) using temperature-dependent parameters C_e and K_e, at least one value under 'T_dyn_flag' column must be set equal to 1. Then [math]\displaystyle{ C_e(T_e) }[/math] and [math]\displaystyle{ K_e(T_e) }[/math] has to be provided through a file named as "Te-dependent_e-parameters.txt", which has a simple format as shown below:

# First 3 comment lines
# Te-dependent_e-parameters.txt file
# First N C_e(T_e) with T_e, no line gap, then M K_e(T_e) with T_e 
N
10.0 3.5e-7
100.0 4.5e-7
200.0 5.5e-7
..... .....
M
10.0 0.0048
100.0 0.0248
200.0 0.0348
300.0 0.0448
400.0 0.0515
..... .....

Summary

Summary for eph_Tinfile keyword
Required/optional Type Accepted values Default See also Remarks
Optional String Short file names 'NULL' nonadiabatic_processes If this file is not provided the FDM mesh is constructed from given input (or default) data. Put the name of file within quotes. In case of restarted runs, the appropriate temperature map of the electronic system should be provided from the last run.