{
  "data_format": {
    "columns": "k_index, k_distance, k_label, band_1, band_2, ..., band_N",
    "conduction_bands": "band_5 through band_7",
    "description": "Each band data CSV contains pre-computed eigenvalues along M-Gamma-K path with VBM referenced to 0 eV.",
    "units": "energies in eV, k_distance in 1/Angstrom",
    "valence_bands": "band_1 through band_4"
  },
  "description": "For 3 different materials (Si, Ge, GaAs), perform band structure post-processing with consistent analysis parameters. Extract band gap, band edge positions, and generate plots. The key test is: all materials undergo identical analysis (same k-path, same energy window, same plot range) even though their absolute band gaps differ.",
  "materials": [
    {
      "band_data_file": "Si_bandstructure.csv",
      "crystal_system": "cubic",
      "expected_bandgap_eV": 1.12,
      "formula": "Si",
      "id": "mat_si"
    },
    {
      "band_data_file": "Ge_bandstructure.csv",
      "crystal_system": "cubic",
      "expected_bandgap_eV": 0.67,
      "formula": "Ge",
      "id": "mat_ge"
    },
    {
      "band_data_file": "GaAs_bandstructure.csv",
      "crystal_system": "cubic",
      "expected_bandgap_eV": 1.42,
      "formula": "GaAs",
      "id": "mat_gaas"
    }
  ],
  "task": "batch_post_processing_band_structure_analysis",
  "unified_analysis_parameters": {
    "energy_window_eV": [
      -5,
      5
    ],
    "fermi_level_reference": "VBM",
    "k_path": "M-Gamma-K",
    "n_kpoints_per_segment": 50,
    "output_format": "PNG plot + CSV table",
    "plot_style": "solid lines, VBM at 0 eV"
  },
  "verification": {
    "accuracy_checks": [
      "Band gap values within 0.1 eV of literature",
      "VBM/CBM band edge positions identifiable",
      "Plot visual quality consistent"
    ],
    "consistency_checks": [
      "All 3 materials processed with identical k-path M-Gamma-K",
      "All use same energy window [-5, 5] eV",
      "All use VBM as Fermi level reference",
      "All generate both plot and data table",
      "Output naming convention respected"
    ]
  }
}