Electrons are late starters
Scientists measure delay of tens of attoseconds between light pulse and electron emission, challenging existing models. The findings have important implications for simulating electronic properties of materials.
Electrons
Articles tagged with Electrons
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Delayed time zero in photoemission
Researchers used ultra-short time measurement technology to test the assumption that electrons leave atoms immediately after photon impact. They found a small but measurable time delay of about twenty attoseconds, indicating electrons 'hesitate' before leaving.
How the first step affects the (watery) result
Researchers from Germany and the US developed a new synthesis paradigm for efficient hydrogen generation. The team found that the light wavelength used in the process affects its efficiency, with redder light resulting in better outcomes.
Stretching single molecules allows precision studies of interacting electrons
Researchers at Cornell University have developed a method to precisely study electron interactions using single-molecule devices. By controlling the spin of cobalt-based molecules, they observed how it affects electron flow and interaction with surrounding conduction electrons.
Acclaimed researcher wins Michelson Postdoctoral Prize
David Hanneke's research created a building block of quantum computing, performing what some call the most accurate experiment in science. He will receive the Michelson Postdoctoral Prize at Case Western Reserve University.
Physicist finds colder isn't always slower as electron emissions increase at temps down to -452 F
Physicist Hans-Otto Meyer's experiment reveals unexpected behavior of cryogenic electron emission at extremely low temperatures. Electron emissions increase in bursts as the temperature decreases, challenging current understanding of physics.
Bizarre matter could find use in quantum computers
Physicists at Rice University and Princeton University have found that ultracold mixes of electrons can have 'topological' properties making them immune to information degradation in quantum computers. The discovery could pave the way for the development of fault-tolerant quantum computers.
Princeton scientist makes a leap in quantum computing
Jason Petta's discovery enables control of single electrons, achieving rapid manipulation without disturbing surrounding trillions. This breakthrough paves the way for future high-capacity quantum computers.
Elusive 'hot' electrons captured in ultra-thin solar cells
Boston College researchers successfully harvested elusive charges using ultra-thin solar cells, opening a potential avenue to improved solar power efficiency. The team developed a mechanism able to extract hot electrons in the moments before they cool, effectively opening an escape hatch for these highly energized particles.
Rice ties in race for atomic-scale breakthrough
Physicists at Rice University have successfully created a Bose-Einstein condensate from strontium atoms, marking an important advancement in atomic-scale research. The achievement demonstrates the long-sought creation of a state where individual atoms lose their identity and come together to form a singular lump.
New study confirms exotic electric properties of graphene
Researchers at Vanderbilt University have successfully demonstrated the fractional quantum Hall effect in clean graphene, a two-dimensional crystalline material. This breakthrough exploits graphene's unique electrical properties to create novel devices and test theoretical models of extreme environments.
Electron self-injection into an evolving plasma bubble
Researchers shed light on electron beam formation by attributing it to the evolution of the plasma bubble shape and nonlinear laser pulse evolution. The discovery is attributed to fine details in 3D simulations, offering a robust mechanism for self-injection and monoenergetic bunch formation.
Strain on nanocrystals could yield colossal results
By applying strain to single-crystal vanadium oxide micro- and nanowires, researchers created phase inhomogeneity, a phenomenon critical to collective electronic behavior of correlated electron materials. This breakthrough could lead to designing and controlling phase inhomogeneity for future devices.
Laser pulses control single electrons in complex molecules
Physicists and chemists have successfully controlled individual, negatively charged particles within a group of electrons in complex molecules. They used femtosecond laser pulses to manipulate the motion of outer electrons in carbon monoxide molecules.
Discovery about behavior of building block of nature could lead to computer revolution
Researchers at the University of Cambridge and Birmingham have successfully created a new particle called spinon and holon when electrons are confined to narrow wires. This experiment has significant implications for the development of quantum computers, which could lead to a new computer revolution.
Physical reality of string theory demonstrated
Researchers used AdS/CFT correspondence in string theory to describe electrons' quantum-critical state, which plays a role in high-temperature superconductivity. The discovery bridges the gap between macroscopic and microscopic worlds.
K-State's fast laser research and theory building on Einsten's work by timing electrons emissions
Physicists at Kansas State University have developed a model to compute the energy and timing of electrons emitted from metals using ultra-short laser pulses. This breakthrough enables researchers to study chemical reactions and understand the basics of chemistry, biology, and life.
Nano-sandwich triggers novel electron behavior
Researchers at UC Davis discovered a material with unique electronic properties, exhibiting mass-like behavior in one direction and mass-less behavior in another. The discovery has potential applications in spintronics technology and could lead to new electronic devices.
Device controls electron spin at room temperature
North Carolina State University scientists developed a GaMnN thin film-based device that manipulates both charge and spin of electrons at room temperature, surpassing previous devices which only functioned at -173°C. The new technology uses lower voltages to switch electron bias, improving semiconductor efficiency and speed.
Keep on spinning
Scientists at Berkeley Lab create two-dimensional electron gas with controlled spin state, exhibiting persistent spin helix with infinite lifetime. This discovery could lead to more efficient spin transistors and other devices.
Solving a subatomic shell game
Physicists at Michigan Technological University have calculated electron affinities for all 15 lanthanide elements, filling in long-standing gaps on the periodic table. The complex atomic structure of lanthanides made it challenging to calculate their electron affinities due to varying subshell configurations and complex variables.
Cross-dressing rubidium may reveal clues for exotic computing
Scientists at NIST's JQI have successfully created ultracold rubidium atoms that exhibit cyclotron motions identical to charged particles in a magnetic field. This breakthrough has the potential to reveal clues for exotic computing and understanding of the fractional quantum Hall effect.
Quantum dance: Discovery led by Princeton researchers could revolutionize computing
Researchers have observed a synchronized quantum dance in electrons' spin within a new material, enabling the transformation of computing and electronics. The discovery has significant implications for data storage, memory, and computation power.
Chemist tames longstanding electron computation problem
A chemist at the University of Chicago has developed a new method to predict many-electron chemistry using only two electrons, allowing for faster and more accurate chemical reaction predictions. This breakthrough could lead to significant advances in fields such as atmospheric ozone depletion, greenhouse gas reduction, and drug design.
K-State theoretical physicist, colleagues steer electrons with laser pulses
Researchers at Kansas State University have developed a method to control the motion of electrons in a hydrogen molecule using ultrafast laser pulses. This breakthrough could lead to the creation of custom-made chemical compounds and a deeper understanding of basic physics processes.
New solar energy material captures every color of the rainbow
Researchers at Ohio State University have created a hybrid material that absorbs all the energy in sunlight and generates electrons easier to capture. This breakthrough material has two useful energy states, lasting up to 83 microseconds, allowing for better charge separation and potentially more efficient solar cells.
Zooming way in, technique offers close-ups of electrons, nuclei
Physicists have developed a novel way of spying on electrons and atomic nuclei using diamond-based magnetic imaging, enabling nanoscale spatial resolution. This technique has potential applications in fields such as materials science, spintronics, and biomedicine.
New insight on superconductors
A team of researchers from UC Davis and Los Alamos National Laboratory have found a simple way to calculate the temperature at which the Kondo liquid emerges in heavy-electron materials, leading to new understanding of superconductivity. The discovery may help researchers find organizing principles of heavy-electron superconductivity.
Electron microscopy enters the picometer scale
Jülich scientists successfully measured atomic spacings down to a few picometres using new methods in ultrahigh-resolution electron microscopy. This allows for the determination of decisive parameters determining physical properties of materials directly on an atomic level in a microscope.
Physicists create millimeter-sized 'Bohr atom'
Researchers at Rice University have created giant millimeter-sized atoms resembling Bohr's atomic model, with electrons behaving like classical particles for several orbits. The achievement has potential applications in next-generation computers and studying quantum chaos.
UBC physicists develop 'impossible' technique to study and develop superconductors
A team of UBC researchers developed a technique to manipulate the number of electrons on ultra-thin layers of material, enabling systematic studies of high-temperature superconductors. The approach has significant implications for future electronics, including quantum computer chips and fuel cells.
Discovery by UC Riverside physicists could enable development of faster computers
Researchers at UC Riverside have made a discovery that could enable the development of faster computers by controlling electron spin and current flow. By altering the thickness of a thin insulator, they were able to selectively pass electrons with specific spins through a structure.
Weizmann Institute scientists find new 'quasiparticles'
Researchers at the Weizmann Institute have created 'quasiparticles' with a fraction of an electron's charge, which could enable powerful yet stable quantum computers. The discovery was made using an extremely precise setup and unique material properties.
Can one 'pin down' electrons?
Researchers at Goethe University Frankfurt have made the first measurement of entangled states in nitrogen, resolving a long-standing debate on electron localization. The study uses COLTRIMS technology to probe the pathways of two electrons, demonstrating that electron location can only be determined for the complete system.
Princeton scientists discover exotic quantum state of matter
Researchers have recorded the quantum Hall effect in a bulk crystal of bismuth-antimony without an external magnetic field, shedding light on unusual electron behavior. This breakthrough could lead to advances in fast quantum computing devices and new electronic technologies.
Rock: Electrons run through it
Scientists have discovered that a chunk of hematite can conduct electrons when exposed to the right chemical conditions. This phenomenon, linked to mineral surfaces, has important implications for understanding soil evolution and environmental cleanup. The discovery challenges long-held assumptions about electron conduction in minerals.
Biological electron transfer captured in real time
Biological electron transfer has been captured for the first time in real time by researchers at the University of Helsinki. The discovery could lead to significant medical advancements, particularly in understanding mitochondrial diseases caused by Complex I dysfunction.
All alone, ammonia and hydrogen chloride use negativity to get attached
Researchers have discovered that supplying or removing an extra electron can make the reaction go from acid and base to neutral molecule or back again, opening up possibilities for precisely controlling chemistry in systems ranging from biology to energy technology. The findings may help illuminate biological reactions as well.
Boston College physicists find new explanation for superconductivity's 'glue'
Researchers identify signature of spin excitations as potential candidate for the 'glue' that binds electrons during high-temperature superconductivity. This discovery moves the field forward toward unlocking the physical mysteries behind a promising phenomenon.
UNH scientists report first findings on key astrophysics problem
Researchers found energetic electrons most abundantly at sites of compressed density within magnetic islands, contradicting previous theories. This discovery provides an important step towards solving the mystery of electron acceleration during magnetic reconnection.
'Cooper pairs' can be found in insulators as well superconductors
Researchers at Brown University have made a groundbreaking discovery, finding Cooper pairs in both superconductors and insulators. The team's findings suggest that Cooper pairs behave differently in each material, with some forming solo pairs in insulators that cannot make continuous electric current.
Young's experiment in a hydrogen molecule
Researchers reproduced Thomas Young's experiment in a hydrogen molecule using electrons and X-rays, revealing wave-like behavior that suggests a quantum nature. The findings provide insight into the transition between classical and quantum physics, with potential implications for quantum cryptography and computation.
The world's smallest double slit experiment
Researchers performed the world's smallest double slit experiment using a hydrogen molecule, demonstrating classical behavior at the quantum level. The results show that quantum particles start behaving in a classical way on a scale as small as a single hydrogen molecule.
Rutgers physicists show how electrons 'gain weight' in metal compounds near absolute zero
Researchers used computer simulations to show how electrons become one thousand times more massive in certain metal compounds at extremely low temperatures. This finding may provide new clues for understanding superconductivity and fabricating new superconducting materials.
Sheet of carbon atoms acts like a billiard table, physicists find
Researchers found that electrons in graphene behave like quantum billiard balls, with wave-like properties and interference patterns. The discovery could lead to new applications such as ballistic transistors and resonant cavities for electrons.
Opposites interfere
Researchers at Weizmann Institute of Science observe oscillating interference pattern between two identical quantum particles, proving quantum theory's predictions. The particles' actions are inextricably tied due to entanglement, even when separated by distance.
UNH researchers prove existence of new type of electron wave
Researchers at UNH have successfully proven the existence of a new type of electron wave on metal surfaces called acoustic surface plasmons. This discovery has significant implications for various fields including nano-optics, high-temperature superconductors, and chemical reactions on surfaces.
Researchers catch motion of a single electron on video
Researchers at Brown University have successfully captured the motion of a single electron in liquid helium using sound waves. The images show electrons moving through the fluid in snakelike paths, which are believed to be following vortex lines - a phenomenon akin to a tornado in superfluids.
Electrons caught in the act of tunneling
Researchers have successfully observed electrons tunnelling through the binding potential of an atom nucleus under the influence of laser light. This breakthrough allows scientists to study electron movement in real-time and has implications for microelectronics and radiation therapy.
Scientists unlock physical, chemical secrets of plutonium
Researchers at Rutgers University have developed a new theory that explains the physical and chemical properties of plutonium, which can help create safer and more versatile nuclear materials. The study finds that valence electrons in solid plutonium metal fluctuate among different orbitals on a short time scale.
Have researchers found a new state of matter?
Physicists Xiao-Gang Wen and Michael Levin propose a new state of matter where electrons are entangled in string-nets. Their model predicts the emergence of conventional particles and fractionally charged quasiparticles, which behave according to Maxwell's equations.
Imaging 'gridlock' in high-temperature superconductors
A new study at Cornell University has imaged 'electronic gridlock' in certain copper oxides, revealing patterns of alternating high- and low-charge density. The research uses a scanning tunneling microscope to image electronic states, showing that holes are centered on oxygen atoms within the Cu-O-Cu bond.
Disorder may be in order for 'spintronic' devices
New study finds that electrons retain their spin alignment for up to three nanoseconds when confined around defects in semiconductors. This discovery presents a design challenge for spintronic devices, as optimal memory retention conditions are not conducive to efficient transport properties.
New accelerator technique doubles particle energy in just 1 meter
Researchers have developed a new accelerator technique that doubles the energy of electrons in just one meter, revolutionizing the field of high-energy physics. This breakthrough technology, using plasma to amplify energy, has the potential to make future accelerators more feasible and affordable.
New accelerator technique doubles particle energy in just 1 meter
A collaboration of researchers has developed a new accelerator technique that doubles the energy of particles in just 1 meter. The breakthrough, published in Nature, uses plasma to amplify the energy of electrons, paving the way for more efficient and affordable future accelerators.
Electrons travel through proteins like urban commuters
Researchers describe a unified description of electron movements through certain proteins, uncovering key pathways that optimize energy harvesting in photosynthesis and animal cells. The study reveals complex routing options that allow electrons to take shortcuts, increasing the challenge for theoreticians.
How to herd atoms
Physicists at the Max Planck Institute have discovered a way to arrange randomly deposited atoms in regular patterns, mimicking the behavior of sheep in a pen. By adjusting substrate temperature and parameters, they created circular fencing that guides adatoms into ordered structures.
Chandra discovers relativistic pinball machine
Astronomers have mapped the rate of acceleration of cosmic ray electrons in a supernova remnant, showing close to maximum theoretical rates. The discovery provides evidence that supernova remnants are key sites for energizing charged particles.
Molecular spintronic action confirmed in nanostructure
Researchers at NIST have confirmed the presence and action of specific molecules in a nanoscale test structure, enabling magnetic switching behavior. The use of organic molecules preserves electron spins, allowing for potentially superior properties compared to conventional electronics.
UA physicist discovers exotic superconductivity
Physicist Andrei Lebed has discovered exotic superconductivity where electron pairs exhibit both rotating and non-rotating behavior, breaking down conventional symmetry laws. This phenomenon is observed in strong magnetic fields and has significant implications for our understanding of quantum mechanics.