Low-Temperature Phase of the Cd$_2$Re$_2$O$_7$ Superconductor: Ab initio Phonon Calculations and Raman Scattering

• Main Authors: Kapcia, Konrad J, Reedyk, Maureen, Hajialamdari, Mojtaba, Ptok, Andrzej, Piekarz, Przemysław, Razavi, Fereidoon S, Oleś, Andrzej M, Kremer, Reinhard K
• Format: Journal Article
• Language: English
• Published: 25.11.2019
• Subjects: Physics - Materials Science; Physics - Superconductivity

Physical Review Research 2, 033108 (2020) Using an {\it ab initio} approach, we report a phonon soft mode in the tetragonal structure described by the space group $I4_{1}22$ of the $1$ K $5d$ superconductor Cd$_2$Re$_2$O$_7$. It induces an orthorhombic distortion to a crystal structure described by...