Browse Physics

Density-functional calculations provide a comprehensive picture of how magnetic order evolves with doping in two iron pnictide compounds.

The addition of tellurium helps to grow large single crystals of an iron-based superconductor.

Decoration experiments of the two-gap superconductor ${\text{MgB}}_2$ show evidence for long-range attraction between vortices in a superconducting mixed state, which is interpreted as coexisting type-I and type-II superconductivity.

Small changes in stoichiometry can destroy superconductivity in FeSe.

Scientists find that stripe order in cuprates coexists with an unusual two-dimensional superconductivity.

After the discovery of superconductivity in doped sodium cobaltate, numerous measurements contributed to mapping out the various magnetic and electronic phases that occur in this material. Now, the report of a new phase diagram may challenge the previous version.

The discovery of superconductivity in iron-based compounds with a similar, but simpler, structure to the iron-pnictides could provide an important testing ground for unconventional superconductivity.

A new class of high-temperature superconductors has been discovered in layered iron arsenic compounds. Results in this rapidly moving field may shed light on the still unsolved problem of high-temperature cuprate superconductivity.

Discovering superconductivity above room temperature is a dream for modern science and technology. Now, theorists propose that for certain types of superconductors, contact with a metal layer could greatly increase the transition temperatures of these materials—in some cases by as much as an order of magnitude.

The ability to tune the onset of superconductivity in a single crystal with other means than chemical doping makes the interpretation of results much cleaner. Now, scientists demonstrate pressure-induced superconductivity in undoped crystals of the pnictide CaFe2As2.

The ability to grow single crystals of a compound in the family of iron-based superconductors will open the door to a wide range of experiments that were not previously possible.

Theorists have developed a simple and intuitive model that could be the basis for explaining superconductivity in iron-arsenides.

Researchers used a magnetic material to create a difference in current-carrying properties between two perpendicular directions in a superconductor. They could easily change the directions with an external magnetic field, which could be useful in superconducting devices.

Weaving together experimental clues and theoretical insights, three physicists devised in 1957 the first fundamental theory of superconductivity, one of the most successful theories in solid state physics.

Researchers used a superconducting structure to measure the properties of a rapid phase transition, as may have happened just after the big bang.

Coating a superconductor with a thin layer of gold dramatically increases its tolerance for magnetic fields.

A new type of wire carries electric current without resistance and is also strong and light.

Magnetic measurements hint at vestiges of superconductivity near room temperature–far too warm for the full superconducting phenomenon to exist.

A new material can tolerate higher magnetic fields than any other superconductor. Similar materials might be used to make more powerful magnets for MRI machines and other uses.

An electronic ratchet could turn magnetic superconductor vortices into the elements of a simple computer.