Articles tagged with Electrons
A novel mechanism for electron optics in two-dimensional solid-state systems has been introduced, allowing for the control of electrons at the scale of micrometers and nanometers. This breakthrough enables the engineering of quantum-optical phenomena in a variety of materials.
Researchers have developed a new laser-based microscope that can resolve the distribution of electrons in crystal lattices with unprecedented resolution. The technique, known as Light Picoscopy, uses powerful laser pulses to drive electrons into fast motion, allowing them to emit radiation that reveals their position within the crystal.
Research by Alexei Frolov finds distinct relationships between particle masses and cluster properties, improving understanding of semiconductors' optical spectra. The study's formulas could be adapted to describe clusters with varying masses, enabling finer tuning of semiconductor properties.
Researchers at Goethe University Frankfurt have confirmed a 90-year-old theory by measuring the recoil of ejected electrons in helium and nitrogen molecules. They observed the molecular movement when light particles hit individual molecules, confirming the effect of radiation pressure with recoil.
A team at Princeton University has detected signatures of a cascade of energy transitions in magic-angle twisted bilayer graphene, which could help explain how superconductivity arises in this material. The researchers found that the addition of each electron caused a jump in the amount of energy needed to add another one.
A research team from the University of Göttingen has successfully harnessed the 'whispering gallery' effect to control electron beams using light. This breakthrough enables new possibilities for quantum technologies in nanoscale sensing and microscopy.
Researchers at University of Freiburg developed a novel, stable oxidizing agent that overcomes common disadvantages of existing oxidants. The new reagent allows for the synthesis of reactive species in standard laboratory solvents and has broad applicability in inorganic, organic chemistry, electrochemical research.
Scientists at UTokyo-IIS developed a machine learning algorithm to infer excited states from ground states of materials. The algorithm used artificial neural networks to analyze data from core-electron absorption spectroscopy, revealing new insights into chemical reactivity and material function.
Quasiperiodic structures exhibit unique beauty and intriguing physics, but a lack of overarching framework hindered understanding. Researchers establish versatile tools for exploring quantum behavior in diverse quasiperiodic settings, demonstrating the strength of their approach to uncover new physical mechanisms.
Physicists from Kyoto University have developed a new 'Nucletouch' table that reimagines the periodic table of elements around protons in the nucleus, rather than electrons. This shift highlights alternative ways to illustrate natural laws and provides a fresh perspective on familiar elements.
Physicists have measured electron flight times in a molecule to study the influence of the molecule on photoemission time. The measurements reveal a delay attributable to the molecular environment that becomes larger as the energy of the light pulses is reduced.
Researchers at Helmholtz-Zentrum Dresden-Rossendorf have developed a novel material that can increase the frequency of terahertz radiation by a factor of seven, paving the way for potential IT applications. The material, cadmium arsenide, is a three-dimensional Dirac material that enables non-linear frequency conversion.
Researchers at Linköping University have developed a method to create thin metallic films using free electrons in a plasma, eliminating the need for powerful molecular reducing agents. This innovation enables the production of processors and similar components without the constraints of traditional chemical vapor deposition methods.
Researchers have discovered two new phenomena - interspecies radiative transition and breakdown of dipole selection rule - in the transport of radiation in atoms and molecules under high-energy-density physics conditions. This finding enhances understanding of HEDP and could lead to insights into how stars evolve in the universe.
Researchers have developed a technique to flatten graphene sheets, reducing microscopic distortions that scatter electrons. This process increases electron mobility, leading to improved sample quality and potentially faster electronic devices.
Scientists have discovered a material that expands dramatically at low temperatures, mimicking water's expansion when frozen. The researchers used x-rays and theoretical descriptions to explain the phenomenon, which is attributed to the Kondo effect and could lead to new alloys for aviation and other applications.
Researchers in the Keller group at ETH Zurich have measured for the first time how single photons alter an unbound electron's dynamics. They found a delay of up to 12 attoseconds between s- and d-electrons, depending on their angular momentum. This subtle signature reflects underlying quantum-mechanical effects.
Physicists have mapped the energy levels of exotic helium atoms and discovered a 'frozen planet' state configuration where an antiproton is trapped. This study provides insights into the stability of such configurations, which may be more amenable to experimental research.
Researchers discovered that a single soft x-ray can destroy a protein-sized molecule by inducing radiation damage in neighboring atoms. The findings could lead to safer medical imaging and a better understanding of heavy metals' electronic properties.
Researchers develop a new terahertz radiation technique to study atomic behavior, enabling faster and more accurate measurements of ultrafast processes. The method uses synchronized electron bunches and terahertz pulses to reduce timing jitter, allowing scientists to observe fundamental chemical reactions.
Physicists at Rutgers University have discovered that applying a magnetic field can create a 'quantum critical point' in certain materials, leading to infinite quantum fluctuations and the formation of superconductors. This finding provides important clues for developing room temperature superconductors.
Scientists successfully track oscillations with a period of about 150 attoseconds, revealing the temporal decay of quantum interference. This experiment paves the way for new applications in studying atomic and molecular processes triggered by high-energy radiation.
Researchers investigate electron behavior in disordered materials, finding a connection to soft matter particles. The study reveals the Griffiths phase, an electronic analog, in Mott-transition systems, bridging condensed matter and soft matter physics.
Researchers at Princeton University have found a van der Waals material, gadolinium tritelluride (GdTe3), with the highest electronic mobility among known layered magnetic materials. The compound's unique properties make it a promising candidate for new areas like magnetic twistronic devices and spintronics.
Researchers used a new technique to study the origin of superconductivity in cuprates by overdoping a material until it disappeared. They found that purely electronic interactions likely lead to high-temperature superconductivity and that this interaction emerges exactly when superconductivity starts, strengthening as it gets stronger.
Scientists have created a high-speed camera for the quantum world, enabling the precise tracking of electron movements at a resolution of a few hundred attoseconds. This microscope can be used to analyze processes in tiny electronic components and molecules, providing valuable insights for developing faster and more efficient electronics.
Researchers at NYU and partner institutions have mapped electron energies with unprecedented clarity, uncovering a quantum relationship between electrons known as hybridization. This breakthrough provides new insight into the physics of topological insulators.
Researchers at the University of Konstanz have successfully controlled ultrafast motion of electrons in a metallic nanocircuit using light manipulation. The new method could speed up electronic switching in devices, enabling faster processing and higher performance.
Researchers at Imperial College London have developed a new technique using powerful lasers and bright x-rays to capture information about extremely dense and hot matter. This breakthrough allows for unprecedented resolution and efficiency in studying warm dense matter, crucial for fusion power and astrophysics.
Researchers at Weizmann Institute of Science have visualized electrons flowing through graphene, mimicking the flow of liquid through a pipe. This behavior has important implications for creating new electronic devices with reduced resistance.
Researchers successfully synthesized a graphene nanostructure with magnetic properties, fulfilling a decades-old prediction. The structure's high exchange coupling energy enables stable spin-based logic operations at room temperature.
Researchers discover samarium hexaboride, a material with strongly interacting electrons, which can also exhibit topological insulating properties. This breakthrough paves the way for more stable quantum computing and opens up new possibilities for exotic physics research.
Researchers at SLAC National Accelerator Laboratory have invented a method called XLEAP to observe electron movements in chemical processes that take place in billionths of a billionth of a second. This technology will provide sharp views of electrons, driving crucial aspects of life and enabling breakthrough studies.
Researchers at the University of Münster have discovered a way to suppress nonlinear damping in spin waves, allowing for efficient generation and control of spin waves in magnetic nano-devices. This breakthrough could lead to significant advancements in magnonics and spintronics.
Artyom Yurov's research suggests the Universe may have quantum properties due to decoherence theory. The phenomenon states objects exist in multiple places until interacting with their environment, causing 'collapse'. This theory challenges traditional understanding of large-scale quantum effects.
A team of researchers has revealed a new state of matter where Cooper pairs enable electricity to flow with some resistance. This finding challenges current theories and requires further investigation. The discovery was made using a technique that involves patterning a thin-film superconductor with arrays of tiny holes.
Physicists have produced a new value for the proton's radius in an experiment conducted at Thomas Jefferson National Accelerator Facility, measuring 0.831 fm, smaller than previous results and in agreement with recent muonic atomic spectroscopy results. The new method used electron scattering and novel techniques to improve precision.
Physicists have discovered that useful information about ultrafast light-matter interactions is buried deep within signals produced by two-colour pump-probe experiments. Advanced techniques are required to extract this information, which could lead to breakthroughs in fields such as vision and photosynthesis.
Researchers discovered a two-atom catalyst that enables efficient oxygen production from water under low-light conditions. The study's findings mimic the activation of photosystem II during photosynthesis, suggesting that similar two-atom catalytic cores might be suitable for achieving efficient water splitting.
Researchers at Ehime University successfully synthesized a nitrogen-embedded polycyclic compound with strong antiaromaticity and stability. The discovery presents significant opportunities for the development of novel organic electronic materials.
Scientists at TU Wien discover that atomic defects and mechanical strain interact to produce single photons, enabling experiments in quantum information and cryptography. This phenomenon was previously unknown and has opened up new possibilities for materials science.
Researchers at ICFO have successfully cooled nanomechanical resonators using electron transport, enabling the observation of quantum effects on demand. By applying a constant current of electrons through the resonator, they reduced thermal vibration fluctuations, achieving a population number of 4.6 quanta of vibration.
Researchers from SUTD discovered a new theory that describes thermionic emission in graphene, improving the accuracy of models used to design devices. The new approach overcomes limitations of existing Dirac cone approximation, enabling universal descriptions of graphene-based devices across different temperatures and energy regimes.
Researchers at the University of Vienna and University of Basel successfully create a quantum superposition in hot, complex molecules composed of nearly 2,000 atoms. The experiment sets new constraints on alternative theories to quantum mechanics, demonstrating the robustness of quantum mechanics on a macroscopic scale.
Researchers discovered asymmetrical movement of free electrons in photoelectric effect, enabling better control over electrons and potentially improving chemistry reactions. The study used ultrashort laser pulses to disrupt the electrons' behavior, allowing them to move sideways for the first time.
Researchers at TU Wien have developed a new measurement protocol that enables direct measurement of the quantum phase of electrons. This breakthrough could lead to better understanding of important phenomena in photosensors and photovoltaics.
Physicists at Rice University have created a new alloy that exhibits unusual electronic properties when traversing the final frontier of quantum criticality. The cerium palladium aluminum alloy behaves like a spin liquid, a metallic system with exotic properties that can be found in other strongly correlated materials.
The GERDA experiment has set a record-breaking sensitivity for detecting the neutrinoless double beta decay, which could reveal if neutrinos are their own antiparticles. The LEGEND project plans to increase the detector mass and reduce background noise to achieve even greater sensitivity.
A new measurement for the size of the proton at 0.833 femtometres confirms it is approximately five percent smaller than previously accepted value. The study resolves the long-standing proton-radius puzzle with an electron-based measurement that agrees with a 2010 finding.
Researchers developed a new method to write and read quantum messages with very fast particles, overcoming the limitations of standard techniques. The novel technique guarantees unambiguous decoding even when particles behave according to both quantum mechanics and special relativity.
Researchers at TU Wien have successfully disentangled the interplay of several electron properties in complex materials. By influencing different characteristics separately, they have uncovered a system where order can be switched on and off individually in relation to two closely interwoven degrees of freedom.
Researchers at Rice University discovered electron pairing in ultrapure lanthanum strontium copper oxide (LSCO) samples at temperatures well above the critical threshold for superconductivity. The finding suggests two energy scales exist, one where pairs form and another where they exhibit collective behavior.
Researchers at Iowa State University have made three groundbreaking discoveries about non-equilibrium quantum phase discovery via non-thermal ultrafast quench near quantum critical points. These findings could lead to the development of new technologies such as optical computing, novel sensors and high-speed communication capabilities.
Scientists at Stanford University have developed an atomically thin heat shield that is effective in preventing overheating in electronic devices. The new material, which consists of four layers just 10 atoms deep, can provide insulation comparable to a sheet of glass 100 times thicker.
Researchers used state-of-the-art technology to investigate collective behavior of electrons in titanium and zirconium, uncovering interplay between light absorption and electronic screening. The study reveals new insights into coupled-electron dynamics, enabling ultrafast manipulation of phases of matter.
Researchers at ETH Zurich measured how electrons in transition metals redistribute within a fraction of an optical oscillation cycle. The study demonstrates the possibility of ultrafast control of material properties, which could inform the development of faster electronic components.
The Q-weak experiment successfully measured the weak charge of the proton by exploiting parity asymmetry in electron scattering off aluminum. Kurtis Bartlett's thesis work played a crucial role in minimizing signal contamination and achieving this milestone.
Scientists at the University of Vienna developed two solutions to overcome limitations in analyzing small crystals with electron radiation. By disturbing the carrier material or covering it with nylon fibers, researchers can achieve a complete 3D view of the crystals, enabling more accurate structure analysis.
Researchers have generated free electrons from organic semiconductors using a single atomic layer of molybdenum disulfide. This breakthrough enables the development of general principles for designing interfaces that can turn light into electrical current with high efficiency.
The University of Vienna team uses a state-of-the-art electron microscope to demonstrate atom manipulation in graphene, revealing the locations of silicon impurities. A new online simulation game, Atom Tractor Beam, allows users to control the movement of these impurities using an electron beam.