ɪn ˌɛsˈɛn sˈiː, ðɪ ɐbˈɪləɾi ʌv kɹˈɪstəl vˌaɪbɹˈeɪʃənz ˈɔːlsoʊ nˈoʊn æz fˈɑːnɑːnz tə pɹˈɑːpɐɡˌeɪt θɹuː ðə mətˈɪɹiəl ɪz sɪɡnˈɪfɪkəntli hˈæmpɚd.
In SnSe, the ability of crystal vibrations (also known as phonons) to propagate through the material is significantly hampered.