Quantum Physics

   

Mechanic and Electrician Superconductivity

Authors: George Rajna

In strongly correlated materials such as cuprate high-temperature superconductors, superconductivity can be controlled either by changing the number of electrons or by changing the kinetic energy, or transfer energy, of electrons in the system. [34] Researchers have seen intrinsic superconductivity up to a temperature of 0.72 K in the transition metal dichalcogenide niobium telluride (NbTe2). [33] Researchers in France and Japan have demonstrated a theoretical type of unconventional superconductivity in a uranium-based material, according to a study published in the journal Physical Review Letters. [32] Researchers from Tokyo Metropolitan University have found that crystals of a recently discovered superconducting material, a layered bismuth chalcogenide with a four-fold symmetric structure, shows only twofold symmetry in its superconductivity. [31] Russian physicist Viktor Lakhno from Keldysh Institute of Applied Mathematics, RAS considers symmetrical bipolarons as a basis of high-temperature superconductivity. [30] Scientists at the Department of Energy's SLAC National Accelerator Laboratory and Stanford University have shown that copper-based superconductors, or cuprates-the first class of materials found to carry electricity with no loss at relatively high temperatures-contain fluctuating stripes of electron charge and spin that meander like rivulets over rough ground. [29] Researchers from Google and the University of California Santa Barbara have taken an important step towards the goal of building a large-scale quantum computer. [28] Physicists have shown that superconducting circuits-circuits that have zero electrical resistance-can function as piston-like mechanical quantum engines. The new perspective may help researchers design quantum computers and other devices with improved efficiencies. [27]

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[v1] 2019-05-11 07:20:36

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