Superconductivity in oxygen

  title={Superconductivity in oxygen},
  author={Katsuya Shimizu and Kazuhiro Suhara and Masamitsu Ikumo and Mikhail I. Eremets and Kiichi Amaya},
Among the simple diatomic molecules, oxygen is of particular interest because it shows magnetism at low temperatures. Moreover, at pressures exceeding 95 GPa (∼0.95 Mbar), solid molecular oxygen becomes metallic, accompanied by a structural transition. The metallization process is characterized by an increase in optical reflectivity, and a change in the slope of the resistance–temperature curve. Here we report that at pressures of around 100 GPa, solid oxygen becomes superconducting, with a… 
Magnetic susceptibility measurement of solid oxygen at pressures up to 3.3 GPa
The magnetic susceptibility of solid oxygen had long been observed only in the restricted pressure region below 0.8 GPa. We succeeded in extending the pressure region up to 3.3 GPa by clamping
Stability and metallization of solid oxygen at high pressure.
  • S. Elatresh, S. Bonev
  • Materials Science, Chemistry
    Physical chemistry chemical physics : PCCP
  • 2020
Analysis of electronic, structural, and thermodynamic properties of solid oxygen at 0 K and finite temperature with hybrid exchange functionals is presented, including a comparison with available experimental data.
Metallic CsI at pressures of up to 220 gigapascals
Direct electrical transport measurements in a diamond anvil cell provide evidence for the metallization of cesium iodide (CsI) at a pressure of 115 gigapascals, indicating that the CsI was superconductive.
First-principles study on superconductivity of solid oxygen
The superconductivity of solid oxygen in ζ phase was investigated by first-principles calculations based on the density functional theory. Using a monoclinic C2/m structure, we calculated the
Experimental results in search for pressure-induced superconductivity are reviewed. Typical examples are simple inorganic and organic molecular crystals, magnetic metals, and elements. We have
Superconductivity in a Grain of Salt
For years, it has been thought that many materials would become metallic, and possibly superconducting, if put under high pressure. Testing that hypothesis has been difficult because of problems in
Semiconductor-metal transitions in some materials at high pressures up to 30 GPa
An approach is suggested for the investigation of pressure-induced semiconductor-metal phase transitions in a wide group of materials based on both the model of p-bonds and Peierls distortion of
Observation of an O8 molecular lattice in the ɛ phase of solid oxygen
Of the simple diatomic molecules, oxygen is the only one to carry a magnetic moment. This makes solid oxygen particularly interesting: it is considered a ‘spin-controlled’ crystal that displays


Observation of Pressure-Induced Superconductivity of Sulfur.
The electrical resistance of sulfur has been measured under pressures up to 100 GPa and temperatures down to 70 mK. Under pressures approaching 100 GPa, sulfur shows metallic reflection comparable to
Optical response of very high density solid oxygen to 132 GPa
We have measured the pressure dependence of the absorption edge to 82±2 GPa and the reflectivity to 132±2 GPa from 0.48 to 3.2 eV of polycrystalline oxygen in a diamond anvil cell. The optical
New high-pressure structural transition of oxygen at 96 GPa associated with metallization in a molecular solid.
An angle-dispersive powder x-ray diffraction study of solid oxygen has been carried out up to 116 GPa at room temperature and a new high-pressure structural transition was observed and explained as an isostructural transition with a discontinuous change in lattice constants in a monoclinic cell.
Oxygen under High Pressure-Temperature Dependence of Electrical Resistance
We have measured electrical resistance of oxygen under high pressures up to 120 GPa and at temperatures down to 45 mK. With increasing pressure, the resistivity of oxygen was found to decrease
The Phase Composition of Triton's Polar Caps
The model has other implications for the phase transition phenomena on Triton, such as a plausible mechanism for the origin of geyser-like plume vent areas and a mechanism of energy transport toward them.
On the microphysical state of the surface of Triton (and beyond).
On the basis of an analysis of the microphysical processes involved in pressureless sintering of particulate materials and an examination of the physical conditions likely to prevail on Triton, it is
Temperature, N2, and N density profiles of Triton's atmosphere: Observations and model
Improved analysis of the Voyager Ultraviolet Spectrometer (UVS) observations of the solar occultation by Triton yields the isothermal temperature and N2 number densities in the altitude range 475–675
Dynamics of Triton's atmosphere
THE recent Voyager encounter established certain facts about Triton's atmosphere: the surface pressure is in the range 1.5–1.9 Pa (15–19 μbar)1; the surface temperature is 38±3K (ref. 2); molecular