Grainy superconductivity
Nature Communications
2011년8월3일
The grain boundaries of iron pnictide superconductors have advantages over those of more commonly used cuprate superconductors reports a paper in Nature Communications this week. Iron pnictides have been studied extensively, and many of their advantages over cuprates have already been determined. But the additional information provided by this study could aid the development of high critical temperature superconductors that could be used to produce ‘ideal’ electric power lines with zero power consumption.
The misalignment of crystal grain boundaries, which deteriorates current densities, has previously been considered major problem in the development of high critical temperature superconductors. Hideo Hosono and co-workers investigate transport properties through well-defined bicrystal grain boundaries with different misorientation angles. They find that the current density in iron pnictides is tolerant to higher misorientation angles than in cuprates.
doi: 10.1038/ncomms1419
리서치 하이라이트
-
7월29일
Engineering: Just add water to activate a disposable paper batteryScientific Reports
-
7월26일
Physics: Slab avalanche origin similar to that of earthquakesNature Physics
-
7월13일
Planetary science: Origins of one of the oldest martian meteorites identifiedNature Communications
-
7월12일
Astronomy: Casualty risk from uncontrolled rocket re-entries assessedNature Astronomy
-
7월12일
Physics: Beam vibrations used to measure ‘big G’Nature Physics
-
7월6일
Biotechnology: Mice cloned from freeze-dried somatic cellsNature Communications
