The efficient and accurate calculation of how ionic quantum and thermal fluctuations impact
the free energy of a crystal, its atomic structure, and phonon spectrum is one of the main …

Pressure has long been recognized as a fundamental thermodynamic variable but its
application was previously limited by the available pressure vessels and probes. The …

The discoveries of high-temperature superconductivity in H 3 S and LaH 10 have excited the
search for superconductivity in compressed hydrides, finally leading to the first discovery of a …

Here we report the high-pressure synthesis of a series of lanthanum–yttrium ternary
hydrides obtained at pressures of 170–196 GPa via the laser heating of P6 3/mmc La–Y …

Producing metallic hydrogen has been a great challenge in condensed matter physics.
Metallic hydrogen may be a room-temperature superconductor and metastable when the …

Here we report targeted high-pressure synthesis of two novel high-T C hydride
superconductors, P6 3/mmc-ThH 9 and F m 3-m-ThH 10, with the experimental critical …

The measurement of superconductivity at above 200 K in compressed samples of hydrogen
sulfide and in lanthanum hydride at 250 K is reinvigorating the search for conventional high …

Following the discovery of high-temperature superconductivity in the La–H system, we
studied the formation of new chemical compounds in the barium-hydrogen system at …

Almost 80 years ago it was predicted that, under sufficient compression, the H–H bond in
molecular hydrogen (H2) would break, forming a new, atomic, metallic, solid state of …

Hydrides under ultrahigh pressure, such as H 3 S and LaH 10, can achieve coveted
superconducting critical temperatures via the conventional electron-phonon coupling …