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190 Current news about the topic electrons

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Magnetic effect without a magnet

Surprise in solid-state physics: The Hall effect, which normally requires magnetic fields, can also be generated in a completely different way – with extreme strength

23-Feb-2021

Electric current is deflected by a magnetic field – in conducting materials this leads to the so-called Hall effect. This effect is often used to measure magnetic fields. A surprising discovery has now been made at TU Wien, in collaboration with scientists from the Paul Scherrer Institute ...

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Ultrafast Electron Dynamics in Space and Time

"We believe that our findings represent a crucial breakthrough towards the goal of tracing electrons through chemical reactions in space and time"

22-Feb-2021

In textbooks and explanatory videos, they are often depicted as colourful balloons or clouds: electron orbitals provide information on the whereabouts of electrons in molecules, a bit like fuzzy snapshots. In order to understand the exchange of electrons in chemical reactions, it is not only ...

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A molecule like a nanobattery

Chemical scientists decipher complex electronic structure of a three-nuclear metallorganic compound with the capacity of donating and receiving multiple electrons

10-Dec-2020

How do molecular catalysts – molecules which, like enzymes, can trigger or accelerate certain chemical reactions – function, and what effects do they have? A team of chemists at the University of Oldenburg has come closer to the answers using a model molecule that functions like a molecular ...

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Old Mystery Solved: a "New Kind of Electrons"

Why do certain materials emit electrons with a very specific energy?

20-Nov-2020

It is something quite common in physics: electrons leave a certain material, they fly away and then they are measured. Some materials emit electrons, when they are irradiated with light. These electrons are then called "photoelectrons". In materials research, so-called "Auger electrons" also play ...

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Photons in a can

A new way to design materials

16-Nov-2020

Crystal symmetry is one of the decisive physical attributes that determines the properties of a material. In particular, the behaviour of an electron is largely affected by the symmetry of the crystal which in turn governs the fundamental behaviour of the material, such as its conductive or ...

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A question of affinity

How to design organic solar cell materials

29-Oct-2020

A collaboration of scientists from the Max Planck Institute for Polymer Research (MPI-P) in Germany and the King Abdullah University of Science and Technology (KAUST) in Saudi Arabia have recently scrutinized organic solar cells and derived design rules for light-absorbing dyes that can help to ...

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Dynamic, yet inertial – and definitely futuristic

Researchers conduct experiments to demonstrate inertial motion in magnetic materials: Groundwork for ultra-fast data storage

09-Oct-2020

In the journal Nature Physics, an international team of scientists from Germany, Italy, Sweden, and France report on their experimental observation of an inertial effect of electron spins in magnetic materials, which had previously been predicted, but difficult to demonstrate. The results are the ...

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Heat Transport without Heating?

Hot Electrons – a very special form of heat transport in metals

01-Oct-2020

When heating a platinum layer on nanometer scales, heat can be transferred by hot electrons through a copper layer into a nickel layer without significantly heating the copper in between. This unusual form of heat transport was discovered by a research group around Jan-Etienne Pudell and Matias ...

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Self-imaging of a molecule by its own electrons

Mapping the atomic motion during a molecular vibration

22-Sep-2020

One of the long-standing goals of research on the light-induced dynamics of molecules is to observe time-dependent changes in the structure of molecules, which result from the absorption of light, as directly and unambiguously as possible. To this end, researchers have developed and applied a ...

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How to generate and steer electrons in liquid water

Surprising results reveal a new aspect of extremely strong electric fields in liquid water

08-Sep-2020

Water molecules undergo ultrafast dithering motions at room temperature and generate extremely strong electric fields in their environment. New experiments demonstrate how in presence of such fields free electrons are generated and manipulated in the liquid with the help of an external terahertz ...

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