Tag Archives: phonons
A microscope that catches the slightest hints of heat
A superconducting transition-edge sensor (TES) is a device well-known for its extreme sensitivity to photons, the particles of light — so much so that they can count photons one by one. They also have very little noise, which makes their … Continue reading
Posted in Scicomm
Tagged atomic force microscopy, bolometry, critical temperature, electromagnetic fields, hexagonal boron nitride, hyperbolic phonon-polaritons, infrared laser, niobium, optical power, phonons, quantum materials, quasiparticles, scanning probe, superconductor, terahertz fields, transiditransition-edge sensors
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Quasiparticles do the twist
Physics often involves hidden surprises in how matter behaves at the smallest scales. A fundamental property in physics is angular momentum, which describes how things spin or rotate, from planets all the way down to particles. Angular momentum is involved … Continue reading
Posted in Scicomm, Science
Tagged angular momentum, blue sky research, centrosymmetry, chiral crystals, Debye temperature, Einstein-de Haas effect, phonons, quasiparticles, tellurium, torque
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Physicists produce video of time crystal in action 😱
Have you heard of time crystals? A crystal is any object whose atoms are arranged in a fixed pattern in space, with the pattern repeating itself. So what we typically know to be crystals are really space crystals. We didn’t … Continue reading
Posted in Scicomm
Tagged BESSY II, Bose-Einstein condensates, energy conservation, Frank Wilczek, Joachim Gräfe, magnons, MAXYMUS, Pauli's exclusion principle, phonons, quasiparticles, space crystals, space time crystals, spin waves, superfluidity, synchrotron light source, thermodynamic ground state, time crystals
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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
Posted in Uncategorized
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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