Tag Archives: Meissner effect
Tracking the Meissner effect under pressure
In the last two or three years, groups of scientists from around the world have made several claims that they had discovered a room-temperature superconductor. Many of these claims concerned high-pressure superconductors — materials that superconduct electricity at room temperature … Continue reading
Posted in Scicomm
Tagged diamond anvil cell, flux-pinning, magnetic field, materials science, Meissner effect, nitrogen vacancy centres, optical magnetometry, quantum spin, room-temperature superconductor, superconductivity
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At last, physicists report finding the ‘fourth sign’ of superconductivity
Using an advanced investigative technique, researchers at Stanford University have found that cuprate superconductors – which become superconducting at higher temperatures than their better-known conventional counterparts – transition into this exotic state in a different way. The discovery provides new insights into … Continue reading
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Tagged ARPES, BCS theory, Bi-2212, BSCCO, conventional superconductor, cuprate superconductor, high-temperature superconductor, Meissner effect, photoemission spectroscopy, specific heat coefficient, Stanford University
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The awesome limits of superconductors
On June 24, a press release from CERN said that scientists and engineers working on upgrading the Large Hadron Collider (LHC) had “built and operated … the most powerful electrical transmission line … to date”. The transmission line consisted of … Continue reading
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Tagged Abrikosov vortex lattice, Abrikosov vortices, BCS theory, Bose-Einstein condensate, CERN, Cooper pairs, copper, electrical conductivity, electrical resistivity, electrons, flux-flow resistance, Joule heating, Large Hadron Collider, Lisa Randall, magnesium diboride, magnetic flux, Meissner effect, niobium, Pauli's exclusion principle, Praveen Chaddah, protons, silver, superconductors, superfluid helium, titanium, type I superconductors, type II superconductors, vortex pinning
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A stinky superconductor
The next time you smell a whiff of rot in your morning’s eggs, you might not want to throw them away. Instead, you might do better to realise what you’re smelling could be a superconductor (under the right conditions) that’s, … Continue reading
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Tagged Ashcroft-Ginzburg, BCS theory of supercondictivity, critical temperature, cuprates, hydrogen sulphide, magnesium diboride, Meissner effect, pnictides, sulphur hydride, superconductors
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Superconductivity: From Feshbach to Fermi
(This post is continued from this one.) After a bit of searching on Wikipedia, I found that the fundamental philosophical underpinnings of superconductivity were to be found in a statistical concept called the Feshbach resonance. If I had to teach … Continue reading
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Tagged 1-2-3 superconductors, absolute zero, BCS theory, Bose-Einstein condensates, Cooper pairs, crystal lattice, Fermi energy, Fermi-Dirac statistics, Feshbach resonance, Meissner effect, Pauli's exclusion principle, phonons, superconductivity
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