Browse Physics

An angle-resolved photoemission study suggests that different physics may underlie two major classes of iron-based superconductors.

Are electronic correlations in the new iron-pnictide high-temperature superconductors as strong as in their older cuprate brethren? Yes, say some physicists; no, say others. X-ray experiments deliver the verdict.

Calculations of the Raman response for iron pnictide superconductors reveal a collective mode that may be crucial to unravel the pairing symmetry.

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.

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.

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.