10 papers
Evidence for superconductivity at 190 K in a pressure-overdoped cuprate
Alexander C. Mark, Huu T. Do, David Rodriguez +7
It is well established that the critical temperature () of cuprate superconductors can be tuned by pressure. For example, compression decouples the hole doping from chemical d…
Amorphous High Density Plutonium
J. K. Katz, A. Rollett, R. J. Hemley
Metastable aluminum-alloyed -plutonium shrinks rapidly and pure -plutonium swells rapidly at 4 K. At ambient temperature alloyed -plutonium swells about as fa…
Interface-dependent Phase Transitions and Ultrafast Hydrogen Superionic Diffusion of H2O Ice
Pengfei Hou, Yumiao Tian, Zifeng Liu +5
High-pressure experiments using diamond anvils have revealed novel properties and phase behavior of H2O under extreme conditions. When contained in diamond-anvil cells, the H2O sam…
Novel Transformations of PbTiO3 with Pressure and Temperature
Husam Farraj, Stefano Racioppi, Gaston Garbarino +8
We investigated the behavior of lead titanate (PbTiO3) up to 100 GPa, both at room temperature and upon laser heating, using synchrotron X ray diffraction combined with density fun…
Stability and Structure of Binary Metal Hydrides under Pressure, Electrochemical Potential and Combined Pressure-Electrochemistry
Mgcini Keith Phuthi, Pin-Wen Guan, Russell J. Hemley +1
Metal hydrides can be tuned to have a diverse range of properties and find applications in hydrogen storage and superconductivity. Finding methods to control the synthesis of hydri…
X-ray Diffraction and Electrical Transport Imaging of Superconducting Superhydride (La,Y)H10
Abdul Haseeb Manayil Marathamkottil, Kui Wang, Nilesh P. Salke +9
We report the synthesis and characterization of (La0.9Y0.1)H10 superhydrides exhibiting coexisting cubic Fm-3m and hexagonal P63/mmc clathrate phases observed over the pressure ran…