תגית: קוונטים

Quantum or not? Mathematical equations shows whether electron transport in nanostructures follows quantum behavior

. Understanding the transport of electrons in nanostructures and biological molecules behavior of molecules. However, determining whether the electrons are behaving according to the classical laws of motion or the quantum mechanical regime at the nanoscale is challenging because many nanostructures fall in a grey area between both regimes. Researchers from the RIKEN Advanced Science …

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When old is new again – A fundamental effect associated with electrons also occurs in non-charged particles

. Just as electronics revolutionized computing and communications technology, spintronics is touted to follow suit. This relatively new field involves manipulating the flow of a magnetism-related property called ‘spin’. In magnons, a spintronic counterpart of electrons, Naoto Nagaosa from the RIKEN Institute and his colleagues have observed an effect first seen with electrons over 130 …

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The hope of meltdown – an evidence of a new state of matter

Symmetry is a fundamental concept in physics. Our ‘standard model’ of particle physics, for example, predicts that matter and anti-matter should have been created in equal amounts at the big bang, yet our existing universe is mostly matter. Such a discrepancy between the symmetry of known physical laws, and what we actually observe, are often …

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Measuring unconventionality – Interference of wave-like electrons reveal: atomic magnets are critical to superconductors

. Achieving superconductivity at room temperature has represented one of the holy grails of physics for decades. A practical material with zero electrical resistance would not only represent a major advance in physics, but also revolutionize technologies from power grids to electric motors. However, the mechanism behind so-called ‘high-temperature’ superconductors, which are superconducting above approximately …

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Molecular blockade

. Artificial ‘molecules’ with an asymmetric structure can control the flow of electrons in semiconductor materials . Nanoscale devices confine electrons and enable manipulation of electron spin—an inherent property akin to the direction in which the particle is rotating. An unexpected mechanism for this control in asymmetric structures has now been reported by Keiji Ono …

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The ‘Hall’ mark of a quantum magnet

. The presence of exotic particles, called spinons, might now be detectable in a magnetic field, providing insight into quantum magnet properties . An important model to explain high-temperature superconductivity is the so-called ‘quantum spin liquid’. Scientists are therefore interested in understanding the low-energy excitations of this magnetic state. Now, a theoretical study by a …

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