The New laser technology represents the quantum world in a millionth of a second, For the first time, researchers have managed to record frame by frame how electrons interact with certain atomic vibrations in solids.
This technique captures a process that usually causes electrical resistance to the material, while in other cases it can cause the exact opposite of the absence of resistance or superconductivity.
The way electrons interact with each other and their microscopic environment determines the properties of all solids, the researchers said.
Controlling this interaction is important for the use of quantum material technology, including superconductors, which used in NMR devices and high-speed magnetic levitation trains, and can one day revolutionize the way energy transported.
In small flakes, atoms vibrate in all solids. The collision between the electron and the atom can be seen as an electron vibrational scattering event called a phonon.
Scattering allows electrons to change their direction and energy. Such electron-phonon interactions underlie many exotic phases of matter, in which the material has unique properties.
With support from the Gordon and Betty Moore Foundation, the UBC Stuart Blason Institute for Quantum Matter (SBQMI) has developed a new ultraviolet laser source that enables photoemission spectroscopy techniques that completed with time to visualize the process. scattering electrons in super-fast time intervals.
The researchers conducted experiments with graphite, carbon crystal forms, and the main compounds are carbon nanotubes, buckyballs, and graphene. Carbon-based electronics is a growing industry, and scattering processes that contribute to electrical resistance can limit its application in nanoelectronics.
With this pioneering technique, we are now ready to solve the puzzle of high-temperature superconductivity and many other interesting phenomena from quantum matter.