Category: 4. Physics
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Signature of spin-phonon coupling driven charge density wave in a kagome magnet
FeGe adopts a hexagonal structure with space group P6/mmm (No. 191). It is composed of a kagome lattice of Fe atoms with Ge-1 centered in the hexagons. These kagome layers are stacked along the c-axis and separated by honeycomb layers of Ge-2. At TN = 410 K, an A-AFM kicks in with spin moment pointing along the c-axis.…
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Testing the limits of the standard model of particle physics with a heavy, highly charged ion
RESEARCH BRIEFINGS 04 October 2023 Quantum electrodynamics, the archetypical theory of electromagnetic interactions, describes the behaviour of charged particles and photons using quantum field theory. Measuring the g factor of a bound electron in a hydrogen-like tin ion (118Sn49+) provides one of the most stringent tests so far of quantum electrodynamics in strong electric fields.…
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Visualizing moiré ferroelectricity via plasmons and nano-photocurrent in graphene/twisted-WSe2 structures
Device structure and ferroelectric doping We investigated a series of graphene/t-WSe2 devices with the same general architecture. These devices are based on back-gated graphene structures, with graphene encapsulated by a minimally twisted bilayer of WSe2 on the top and h-BN at the bottom (Fig. 1a). The t-WSe2 was assembled from the same microcrystal of monolayer WSe2,…
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Visualizing symmetry-breaking electronic orders in epitaxial Kagome magnet FeSn films
Epitaxial growth and electronic structure of FeSn The films are grown on SrTiO3(111) substrates that are thermally treated in ultrahigh vacuum to obtain step-terrace morphology with a (4 × 4) reconstruction (Supplementary Fig. S1). With a lattice mismatch of 4.0% between SrTiO3(111) substrate (aSTO(111) = 5.52 Å) and FeSn (aFeSn = 5.30 Å), three-dimensional island growth mode is observed at the initial stages. The…
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How purposeless physics underlies purposeful life
How purposeless physics underlies purposeful life Continue Reading News Source: www.nature.com
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Breaking the Born-Oppenheimer Approximation – Experiments Unveil Long-Theorized Quantum Phenomenon
A molecule with two platinum atoms absorbs a photon and starts to vibrate. The vibration enables the molecule’s electron spin to flip, allowing the system to simultaneously change electronic states in a phenomenon called inter-system crossing. Credit: Argonne National Laboratory Ultrafast lasers and X-rays have revealed the coupling between electronic and nuclear dynamics in molecules.…
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A graphene addition for enhancing the critical current density of Bi-2223 superconductors
Credit: Muralidhar Miryala from SIT, Japan Superconductors are materials that offer zero electric resistance to the flow of current on being cooled down below a certain critical temperature. Typically, superconductors have a very low critical temperature, close to absolute zero. However, a class of superconductors, known as high-temperature superconductors (HTS) have a critical temperature above…
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What are attoseconds? Nobel-winning physics explained
French physicist Anne L’Huillier was the first to discover a tool to pry open the world of attoseconds. The Nobel Physics Prize was awarded on Tuesday to three scientists for their work on attoseconds, which are almost unimaginably short periods of time. Their work using lasers gives scientists a tool to observe and possibly even…
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quantum simulation and computation with superconducting qubits – Physics World
My Favourite Qubit: quantum simulation and computation with superconducting qubits – Physics World Skip to main content Close search menu Discover more from Physics World Copyright ©… Continue Reading News Source: physicsworld.com
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the atomic ion – Physics World
My Favourite Qubit: the atomic ion – Physics World Skip to main content Close search menu Discover more from Physics World Copyright © 2023 by IOP Publishing Ltd and individual… Continue Reading News Source: physicsworld.com