Superconductivity

Published October 26, 2009

Superconductivity

Microwave-frequency excitation of a superconductor-metal-superconductor junction is used to resolve the dynamic mechanisms behind the temporal response.

Alexander V. Balatsky, David Parker, Physics 2, 59 (2009) – Published July 13, 2009

Superconductivity

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

Zlatko Tesanovic, Physics 2, 60 (2009) – Published July 13, 2009

Superconductivity

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.

Published June 15, 2009

Superconductivity

Calculations suggest that the height of the pnictogen atom in iron-based pnictide superconductors determines the symmetry of the superconducting gap.

Miles V. Klein, Physics 2, 46 (2009) – Published June 1, 2009

Superconductivity

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

Published June 1, 2009

Materials Science Superconductivity

Following diamond and silicon, germanium is the third elemental semiconductor to host superconductivity at ambient pressure.

Published April 27, 2009

Magnetism Superconductivity

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

Published March 30, 2009

Materials Science Superconductivity

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

Ernst Helmut Brandt, Shi-Ping Zhou, Physics 2, 22 (2009) – Published March 16, 2009

Superconductivity

Decoration experiments of the two-gap superconductor MgB₂ show evidence for long-range attraction between vortices in a superconducting mixed state, which is interpreted as coexisting type-I and type-II

Published February 2, 2009

Superconductivity

Small changes in stoichiometry can destroy superconductivity in FeSe.

Published December 8, 2008

Superconductivity

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

Published October 20, 2008

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.

Michelle Johannes, Physics 1, 28 (2008) – Published October 13, 2008

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.

Dung-Hai Lee, Physics 1, 19 (2008) – Published September 15, 2008

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.

Michael R. Norman, Physics 1, 21 (2008) – Published September 15, 2008

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.

Published August 11, 2008

Superconductivity

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.

Published July 17, 2008

Superconductivity

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.

Published July 14, 2008

Superconductivity

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