{'fraction_non_alphanumeric': 0.027912621359223302, 'fraction_numerical': 0.03033980582524272, 'mean_word_length': 5.156716417910448, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Calculation of Phonon Vibrational Spectra Superconductivity of Calcium Dinitride by Theoretical Calculation

By theoretical calculation, the crystal structure, stability, and electron-phonon interactions of calcium dinitride (CaN2) have been described, and CaN2 is predicted to be a superconducting material. The action mechanism of thermodynamics about CaN2
 are induced through the Debye-Grüneisen model. The dispersion curves of CaN2 show large pseudo-gaps in the 400–1300 cm−1 range. The total of the electron-phonon coupling constants for CaN2 is given by λ = 0.37, with a corresponding
 estimated superconducting temperature of Tc ≈ 1 K. The estimated superconducting temperature of CaN2 rose to 28.8 K as the pressure increased to 10 GPa, and then decreased monotonically at higher pressures to almost zero at 50 GPa.