A team of researchers has discovered superconductivity at 250 K in lanthanum hydride (LaH₁₀) under high pressures, marking a significant advancement in the search for high-temperature superconductors. This finding confirms theoretical predictions that superconductivity can occur in materials with high phonon frequencies, such as hydrides. The study reports that superconductivity in LaH₁₀ occurs at a pressure of approximately 170 GPa, with a critical temperature (Tc) of about 250 K. This is a substantial increase from the previously recorded Tc of 203 K in hydrogen sulfide (H₃S) under high pressure. The superconducting properties were verified through observations of zero resistance, an isotope effect, and a decrease in Tc under an external magnetic field, suggesting an upper critical magnetic field of around 120 T at zero temperature. The research also highlights the importance of theoretical calculations in predicting superconducting materials, particularly those with clathrate structures. These structures, where host atoms (like La, Y, or Ca) are at the center of hydrogen cages, are believed to facilitate high Tc due to strong electron-phonon interactions. The study further shows that the superconducting phase of LaH₁₀ has a face-centered cubic (Fcc) structure with a lattice constant of 5.1019 Å. The stoichiometry of the superconducting phase was determined to be LaH₉.₆, consistent with theoretical predictions. The discovery of superconductivity at 250 K in LaH₁₀ represents a major step toward achieving room-temperature superconductivity (RTSC) at high pressures. It also supports the possibility of conventional superconductivity at ambient pressure, as suggested by the behavior of other superconducting materials. The study underscores the potential of high-pressure synthesis and theoretical modeling in the search for new superconducting materials, with implications for future research in both theoretical and experimental physics.A team of researchers has discovered superconductivity at 250 K in lanthanum hydride (LaH₁₀) under high pressures, marking a significant advancement in the search for high-temperature superconductors. This finding confirms theoretical predictions that superconductivity can occur in materials with high phonon frequencies, such as hydrides. The study reports that superconductivity in LaH₁₀ occurs at a pressure of approximately 170 GPa, with a critical temperature (Tc) of about 250 K. This is a substantial increase from the previously recorded Tc of 203 K in hydrogen sulfide (H₃S) under high pressure. The superconducting properties were verified through observations of zero resistance, an isotope effect, and a decrease in Tc under an external magnetic field, suggesting an upper critical magnetic field of around 120 T at zero temperature. The research also highlights the importance of theoretical calculations in predicting superconducting materials, particularly those with clathrate structures. These structures, where host atoms (like La, Y, or Ca) are at the center of hydrogen cages, are believed to facilitate high Tc due to strong electron-phonon interactions. The study further shows that the superconducting phase of LaH₁₀ has a face-centered cubic (Fcc) structure with a lattice constant of 5.1019 Å. The stoichiometry of the superconducting phase was determined to be LaH₉.₆, consistent with theoretical predictions. The discovery of superconductivity at 250 K in LaH₁₀ represents a major step toward achieving room-temperature superconductivity (RTSC) at high pressures. It also supports the possibility of conventional superconductivity at ambient pressure, as suggested by the behavior of other superconducting materials. The study underscores the potential of high-pressure synthesis and theoretical modeling in the search for new superconducting materials, with implications for future research in both theoretical and experimental physics.