Interaction of acoustic and optical phonons in a soft-bonded Cu-Se framework of large unit cell minerals with anionic disordersRemoveKewal Singh Rana, Raveena Gupta, Debattam Sarkar, Niraj Kumar Singh, Somnath Acharya, Satish Vitta, Chandan Bera, Kanishka Biswas, and Ajay SoniPhys. Rev. B 108, 045202 (2023)