Physics

Credit: CC0 Public Domain The paradox of Schrödinger’s cat—the feline that is, famously, both alive and dead until its box is opened—is the most widely known example of a recurrent problem in quantum mechanics: its dynamics seem to predict that macroscopic objects (like cats) can, sometimes, exist simultaneously in more than one completely distinct state.
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Graphically structural illustrations of the broadband 1-bit coding particles and the corresponding transmission amplitude and phase responses. Credit: Science China Press Due to their excellent performance in manipulating electromagnetic (EM) waves freely and flexibly, metasurfaces have been widely investigated since the beginning of the 21st century. However, with the rapid development of digital information technology,
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Laser pulses generate and track electronic quantum interference in an atom. Credit: AG Stienkemeier A team headed by Prof. Dr. Frank Stienkemeier and Dr. Lukas Bruder from the Institute of Physics at the University of Freiburg has succeeded in observing in real-time ultrafast quantum interferences—in other words the oscillation patterns—of electrons which are found in
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Tunable photoluminescence and lasing spectra from FAPbX3 NCs. Credit: SIOM Formamidinium (FA) perovskites have exhibited outstanding optoelectronic properties in efficient solar cells and light-emitting diodes. However, their development on nanolaser application has rarely been explored, especially the up-conversion lasing performance. Recently, a collaborative research team from Shanghai Institute of Optics and Fine Mechanics (SIOM) of
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Schematic temperature-pressure-randomness phase diagram of the Mott transition system examined by the researchers. The electrons in the electronic Griffiths phase behave like soft matter. Credit: Yamamoto et al. Most theories of solid state and soft matter physics were developed independently; thus, a few physical concepts are applicable to both. Recent research, however, particularly a study
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An optical cavity with a nonlinear material (purple) between two mirrors (blue). Light that enters from the left, resonates inside the cavity. Due to noise, the output on the right switches randomly between two values. A small perturbation in the cavity (like a particle, shown here as the yellow Є) changes the switching output pattern.
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Illustrations of cell mechanotransduction linkages and the single-molecule manipulation assay Top panel: Sketch of a cell attached on an extracellular matrix through its supramolecular mechanotransduction linkages. Middle panel: A zoom-in sketch of a typical inter-molecular interactions, where the domains of the molecule can be structured (folded) or unstructured (unfolded) in a force-dependent manner. The mechanical
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The researchers observed the magnetic skyrmions in an x-ray microscope on a sample of adjustable temperature. Credit: Kai Litzius A joint research project of Johannes Gutenberg University Mainz (JGU) and the Massachusetts Institute of Technology (MIT) that previously demonstrated the use of new spin structures for future magnetic storage devices has achieved yet another milestone.
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Clumps of electrons speeding down the superconductor highway represent the the motion of the Pascal conductance series. Credit: Jeremy Levy A research team led by professors from the University of Pittsburgh Department of Physics and Astronomy has announced the discovery of a new electronic state of matter. Jeremy Levy, a distinguished professor of condensed matter
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Remarkable materials known as topological insulators have a fragile side. Credit: Zhi-Da Song, Princeton University. Electrons race along the surface of certain unusual crystalline materials, except that sometimes they don’t. Two new studies from Princeton researchers and their collaborators explain the source of the surprising behavior and chart a course for restoring conductivity in these
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Researchers were able to shape the electric field of an attosecond pulse. Credit: Jürgen Oschwald and Carlo Callegari Chemical reactions are determined at their most fundamental level by their respective electronic structure and dynamics. Steered by a stimulus such as light irradiation, electrons rearrange themselves in liquids or solids. This process takes only a few
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Credit: University of Strathclyde, Glasgow As air travel comes under pressure to reduce its environmental impact and prompts us to reconsider our transport choices, scientists are searching for greener ways to power flight. Despite electric car technology advancing and consumers slowly but surely coming around to the idea of electrically-powered driving, the prospects of electric
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Fabrication of MnBi2Te4 thin-flake device. (A) Optical image of representative few-layer MnBi2Te4 flakes cleaved onto Al2O3 thin film. The MnBi2Te4/Al2O3 stack is supported by a PDMS substrate. Image was obtained in transmission mode. Scale bar: 20 μm. (B) Optical image of the same MnBi2Te4/Al2O3 stack transferred on to a 285-nm SiO2/Si substrate. Tape residue is
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A material made at Princeton has highest electron mobility among known layered magnetic materials. Electrons inside the material, gadolinium tritelluride, are able to travel at high speeds with minimal scattering, reducing the heat dissipation of any electronic devices built from it. Credit: Shiming Lei. All the elements are there to begin with, so to speak;
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Illustration of the Mahan exciton forming in the dense electron-hole plasma upon photoexcitation of the hybrid perovskite. Credit: Tania Palmieri Physicists from Switzerland and Germany have unveiled fingerprints of the long-sought particle known as the Mahan exciton in the room temperature optical response of the popular methylammonium lead halide perovskites. The optical properties of semiconductors
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Illustration of an antiferromagnetic bimeron. Credit: Xichao Zhang (2020). Magnetic bimeron is a topological spin texture with particle-like characteristics, which can exist in chiral magnets with in-plane magnetic anisotropy. The magnetic bimeron with topological charge of one can be regarded as a counterpart of the magnetic skyrmion in perpendicularly magnetized systems. So far, the studies
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Credit: CC0 Public Domain “Powering a topological superconductor using a time crystal gives you more than the sum of its parts,” says Jason Alicea, a researcher at California Institute of Technology (Caltech) in the US. The discovery of topological states has bred reams of research revealing new condensed matter and quantum physics, with potential technological
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Credit: CC0 Public Domain As Earth rotates along its axis, it wobbles a little bit. This wobbling comes, in part, from how mass is distributed across the planet. Nuclear physics researchers have now observed this same type of wobbling in Au187—a gold isotope that lives for just eight minutes. Fundamental science research like this can
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