Angling for gold
A new model provides an alternative description of atomic-level gold bonding, taking into account bond directionality. The Tersoff potential model allows for reliable covalent bonds between gold atoms and other materials.
Electron Density
Articles tagged with Electron Density
Beams to order from table-top accelerators
Researchers achieve stable, high-energy electron beams by controlling wave velocity and intensity using a two-stage process. This innovation enables compact, cost-effective colliders for fundamental physics and new ultrafast light sources.
GPS stations can detect clandestine nuclear tests
Researchers have discovered that GPS stations can detect the impact of underground nuclear tests on the ionosphere, allowing for the confirmation of clandestine nuclear explosions. By analyzing changes in atmospheric electron density, scientists can pinpoint the location and timing of such events.
Turning down the noise in graphene
Researchers at Lawrence Berkeley National Laboratory have developed a graphene noise model, showing minimal background signal noise near the Dirac point. The model reveals an M-shaped pattern in single-layer graphene and a V-shaped pattern in bi-layer graphene, correlating to spatial-charge inhomogeneity.
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.
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.
'Prettier world' of computer modeling provides key details, says Sandia researcher
Researchers use computer simulations to gain insights into material properties and behavior that cannot be observed through experiments. Simulations have been shown to accurately predict the reliability of materials that coat surfaces, offering a more complete understanding than traditional experimental methods.
Letting the spin loose
A team of scientists has successfully separated spin from charge in a quantum wire, allowing it to progress independently along its length. This achievement demonstrates the phenomenon predicted six decades ago and has significant implications for our understanding of electron behavior.
Novel Explanation Offered For Puzzling Electron 'Gas' Experiments
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.