#Input file for the anaddb code. Analysis of the SiO2 DDB #Flags dieflag 1 ! Frequency-dependent Dielectric tensor flag ifcflag 1 ! Interatomic force constant flag thmflag 1 ! Thermal flag. Gives Internal energy, entropy, ! heat capacity, phonon DOS, Debye-Waller factor) #Effective charges chneut 2 ! Charge neutrality requirement for effective charges. ! 2=> imposed with weights proportional to screening) #Interatomic force constant info dipdip 1 ! Dipole-dipole interaction treatment ifcana 1 ! Analysis of the IFCs ifcout 16 ! Number of IFC's written in the output, per atom natifc 2 ! Number of atoms in the cell for which ifc's are analysed atifc 1 4 ! List of atoms prt_ifc 1 ! Print the interatomic force constants in file ifcinfo.out #Thermal information nchan 1250 ! # of channels for the DOS with channel width 1 cm-1 nwchan 5 ! # of different channel widths from this integer down to 1 cm-1 thmtol 0.060 ! Tolerance on thermodynamical function fluctuations dossum 1 ! Compute also the sum and difference DOS #Wavevector grid number 1 (coarse grid, from DDB) brav 4 ! Bravais Lattice : 1-S.C., 2-F.C., 3-B.C., 4-Hex.) ngqpt 2 2 2 ! Monkhorst-Pack indices nqshft 1 ! number of q-points in repeated basic q-cell q1shft 0.0 0.0 0.5 #Wavevector grid number 2 (series of fine grids, extrapolated from intrat forces) ng2qpt 12 12 12 ! sample the BZ up to ngqpt2 ngrids 3 ! number of grids of increasing size q2shft 0.0 0.0 0.5 #Wavevector list number 1 (Reduced coordinates and normalization factor) nph1l 11 ! number of phonons in list 1 qph1l 0.0 0.0 0.0 1.0 0.0 0.0 0.5 1.0 0.0 0.0 0.45 1.0 0.0 0.0 0.4 1.0 0.0 0.0 0.35 1.0 0.0 0.0 0.3 1.0 0.0 0.0 0.25 1.0 0.0 0.0 0.2 1.0 0.0 0.0 0.15 1.0 0.0 0.0 0.1 1.0 0.0 0.0 0.05 1.0 #Wavevector list number 2 (Gamma point only, with limiting direction # in cartesian coordinates. ) nph2l 1 ! number of phonons in list 2 qph2l 0.0 0.0 1.0 0.0 # Not the default value, to keep temporal continuity with older versions symdynmat 0 #%% #%% [setup] #%% executable = anaddb #%% input_ddb = t14.ddb.out #%% test_chain = t14.in, t15.in #%% [files] #%% files_to_test = #%% t15.out, tolnlines = 0, tolabs = 0.000e+00, tolrel = 0.000e+00 #%% [paral_info] #%% max_nprocs = 4 #%% [extra_info] #%% authors = Unknown #%% keywords = #%% description = #%% Analyze the DDB for quartz build in test 14. #%% Compute the interatomic force constants, the phonon Density of States, #%% different thermodynamical functions of temperature, #%% phonon frequencies in the whole Brillouin zone, #%% oscillator strengths and mode effective charges at q(0 0 0), #%% the electronic dielectric tensor, and the (full) dielectric tensor #%% at zero frequency (so including atomic displacements and #%% related polarization). #%% topics = PhononBands, Phonons, Temperature #%%