首页|Origin of strange normal-state and superconductivity in sulfur hydrides at high pressures
Origin of strange normal-state and superconductivity in sulfur hydrides at high pressures
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NSTL
Elsevier
The origin of strange normal-state and superconducting properties for the carbon and lanthanum incorporated sulfur hydride molecular solids (CLSH) are theoretically evaluated. These solids are found to superconduct at about room temperature, but only at extremely high pressures. We evaluate the electronic transport properties of CLSH and related molecular solids without knowing their precise crystal structure and chemical composition at extreme pressures that can be carried out unequivocally with ionization energy theory and the energy-level spacing renormalization group method. Our theory and method provide the precise physical conditions, namely, the pressure-induced Ramachandran bonding with high-frequency phonons and the temperature-induced electron excitation are responsible for room temperature superconductivity in molecular solids. This artificial Ramachandran-bond strength and the separation between two molecules are estimated to be about 1.3 eV and 220 pm, respectively. We also provide proper theoretical conditions that deny room pressure superconductivity in any molecular hydrides for any temperature.
Superconducting hydridesElectrical propertiesRamachandran bondingPhonon frequencyEnergy-level spacing renormalization groupmethodIonization energy theoryMODELTRANSITIONHYDROGENICE
NSTL
Elsevier
