Articles tagged with Electron Theory Of Metals
Researchers detect anomalous Hall effect in collinear antiferromagnets with non-Fermi liquid behavior, revealing a 'virtual magnetic field' that boosts the phenomenon. The findings open up new possibilities for information technologies and require further experimental confirmation.
A team of physicists at Rice University has made a breakthrough in understanding the behavior of strange metals by leveraging quantum information theory. Electron entanglement peaks at a critical transition point, shedding new light on the exotic properties of these materials.
Researchers at Vienna University of Technology have developed a new alloy, pyrochlore magnet, that exhibits nearly zero thermal expansion over an extremely large temperature range. This breakthrough is due to the material's heterogeneous composition, which balances out the usual thermal expansion effect.
Researchers at TU Wien discovered a new energy band that remains connected by an 'umbilical cord' when one allowed energy range splits into two separate bands. This phenomenon is bound to occur in materials with large electron interaction, opening up a new perspective on technologically highly interesting classes of materials.
Researchers observe quantum oscillations in CaAs3 near the Mott-Ioffe-Regel limit, showing strong electronic coherence despite insulating behavior. The findings challenge conventional theories and offer a new perspective on quasiparticle coherence.
Researchers at Rice University have uncovered a phenomenon where quasiparticles lose their identity in extreme quantum materials, leading to unique properties. This discovery has broader implications for understanding transitions in other correlated materials and creating advanced superconductors.
The study reveals that localized electrons drive magnetism in FeSn thin films, challenging existing theories about magnetism in kagome metals. The research could guide the development of materials with tailored properties for advanced tech applications.
Researchers have discovered that electrons in certain quantum materials behave like a viscous fluid, allowing for the detection of terahertz waves. This breakthrough enables faster data transfer and advanced medical imaging technologies.
Researchers have unveiled a new class of quantum critical metal that sheds light on intricate electron interactions. The discovery could lead to the development of electronic devices with extreme sensitivity, driven by unique properties of quantum-critical systems.
Physicists at Trinity College Dublin developed a new theory describing the energy landscape of collections of quantum particles. This work addresses decades-old questions and may help scientists design materials revolutionizing green technologies.
Researchers at the University of Texas at Austin have discovered topological vortices in polaron quasiparticles that contribute to generating electricity from sunlight. The discovery can help develop new solar cells and LED lighting with exceptional energy conversion efficiency.
Researchers have discovered unusual transport phenomena in ultra-clean SrVO3 samples, contradicting long-standing scientific consensus. The study's findings challenge theoretical models of electron correlation effects and offer insights into the behavior of transparent metals.
Researchers at ETH Zurich directly detected electron vortices in graphene using a high-resolution magnetic field sensor. The vortices formed in small circular disks with different diameters and were observed to reverse the flow direction.
Scientists have discovered a new way to transform an insulating material into a semimetal by exposing it to ultrafast laser pulses. This process alters the energy states and electron movement, temporarily creating a semimetallic state that can be used in devices with dynamic properties.
Researchers discovered charge fractionalisation in an iron-based metallic ferromagnet using laser ARPES spectroscopy, revealing collective excitations and quasiparticles. The study challenges fundamental quantum mechanics by showing electrons can behave as independent entities with fractionally charged pockets.
Researchers at Rice University have discovered a new material that exhibits both quantum correlations and geometric frustration, resulting in a unique flat band structure. This finding provides empirical evidence of the effect in a 3D material and has implications for understanding exotic features in materials science.
Researchers at Uppsala University and Columbia University have created a new 2D quantum material, CeSiI, with atoms-thin layers of cerium, silicon, and iodine. The material features super-heavy electrons with an effective mass up to 100 times that of ordinary materials.
Researchers investigate grain size and temperature effects on Ti deformation at extremely low temperatures, finding that cryogenic temperatures trigger deformation twinning, boosting strength and ductility. The study proposes a modified Hall-Petch relationship to explain strengthening mechanisms at cryogenic temperatures.
Researchers use quantum chemical calculations to understand sodium's transformation into an insulator at high pressures. The study confirms theoretical predictions made by Neil Ashcroft and connects it with chemical concepts of bonding.
The Wiedemann-Franz law, a 170-year-old principle, breaks down in quantum materials but remains applicable to copper oxide superconductors. Theoretical studies using the Hubbard model show that electrons' collective behavior explains the discrepancies.
Physicists have directly observed the Kondo effect in a single artificial atom using a scanning tunnelling microscope. The team confirmed a decades-old prediction by validating their experimental data against theoretical models. This breakthrough paves the way for investigating exotic phenomena in magnetic wires.
Researchers found that changing the stacking order of layers in transition metal dichalcogenide (TMD) semiconductors creates new optoelectronic devices with tailor-made properties. The study reveals dark excitons exclusively located in the top layer, which can be utilized for optical power switches in solar panels.
A new device design inspires improved integrated circuit designs by visualizing electric current flow lines around sharp bends. The research enables better understanding of heat generation in electronic devices, leading to more efficient circuit creation and reduced risk of overheating.
Researchers have identified a mechanism explaining the characteristic properties of strange metals, which operate outside normal rules of electricity. The theory combines two properties: electron entanglement and nonuniform atomic arrangement, resulting in electrical resistance.
Researchers have finally found Pines' demon, a massless and neutral composite particle predicted to exist in certain metals. They used a nonstandard experimental technique that directly excites a material's electronic modes, allowing them to see the demon's signature in strontium ruthenate.
In certain metals, phase transitions occur gradually due to exotic laws of quantum mechanics, allowing new insights into the quantum world. Researchers at the University of Bonn and ETH Zurich have directly observed this effect, enabling a better understanding of critical slowing down in fermions.
Researchers at MIT have taken the first direct images of fermion pairs in a cloud of atoms, shedding light on how electrons form superconducting pairs that glide through materials without friction. The observations provide a visual blueprint for how electrons may pair up in superconducting materials.
Researchers at UCF have developed single-atom platinum catalysts that reduce the amount of precious metals needed in catalytic converters. These improvements can enhance catalytic performance while minimizing environmental harm.
Researchers have synthesized Pt5Ce alloy nanoparticles with ideal particle sizes of 6–9 nm, achieving high activity and stability toward the oxygen reduction reaction. The study's findings suggest that optimizing particle size is crucial for balancing catalytic performance and industrial applicability.
FeRh, a metal with antiferromagnetic and ferromagnetic phases, has its phase transition kinetics measured using ultrafast techniques. The study reveals new insights into the ultrafast dynamics of magnetic materials.
Researchers create a new electronic phase with stacked layers of tungsten ditelluride, challenging current theory on electron interaction in metals. The experiment reveals electrons behaving as if they were in a single dimension, creating a new type of metallic state.
Researchers discovered neutral Co13O8 clusters with cubic structure and large HOMO-LUMO gap, exhibiting remarkable thermal stability and aromaticity. These 'metalloxocubes' are expected to become suitable candidates for genetic materials.
Researchers at Lawrence Livermore National Laboratory have discovered the crystal structure of curium under pressure, revealing new insights into magnetically stabilized crystals. The study uses electron energy-loss spectroscopy and density functional theory to understand the electronic and magnetic structure of Cm.
Two researchers at Cornell University have made important theoretical discoveries that establish the principles of crystal bonding for a group of thousands of compounds. The 'Papoian-Hoffmann bonding formula' is based on magic numbers, designating stability in linear, square and cube lattices.
Physicists have calculated a property known as Cooper instability that produces superconductivity in electrons, suggesting composite fermions can achieve quantum superconductivity. The research, published in Nature, provides convincing evidence for the formation of magically mobile Cooper pairs.
Researchers have found that electrons in quasicrystals travel in bands with distinct momentum and energy, correlated with the structure of the alloy. This discovery challenges theoretical expectations and opens new avenues for inquiry into the material's properties.
Researchers used a scanning tunneling microscope to visualize the electron clouds around impurities in copper oxide superconductors, shedding light on their behavior and potential applications. The study provides new insights into the mechanism of high-critical-temperature superconductivity.
Researchers at Arizona State University have achieved clear images of electron orbitals in Cu2O, verifying the hypothesis that both ionic and covalent bonding occurs in the material. The images show complex formations resembling a dumbbell shape, indicating the presence of metal-to-metal bonds.
Researchers discover collective spin excitation in high-temperature superconductor, suggesting magnetic pairing mechanism. The experiment provides important insights into the behavior of electron spins, crucial for models of high temperature superconductivity.
Researchers found that below a certain electron density, electrons behaved like insulators, but above this density, a conducting state was observed. The team proposes that a novel kind of superconductor is responsible for this phenomenon.
Researchers used laser pulses to capture detailed snapshots of electron motion at metal surfaces, revealing fundamental dynamics in real-time. This technique has implications for understanding phenomena such as transistor performance and chemical reactivity.