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Combined technique using diamond probes for nanoscale imaging of magnetic vortex structure

Credit: photo/©: Arne Wickenbrock, JGU Obtaining a precise understanding of magnetic structures is one of the main objectives of solid-state physics. Significant research is currently being undertaken in this field, the aim being to develop future data processing applications that use tiny magnetic structures as information carriers. Physicists at Johannes Gutenberg University Mainz (JGU) and the Helmholtz Institute Mainz (HIM) recently presented a new method for investigating magnetic structures combining two different techniques. This allows to measure and map the magnetization as well as the magnetic fields of the sample. Involved in the project were atomic physicists from the work group led by Professor Dmitry Budker and the team of experimental solid-state physicists led by Professor Mathias Kläui. The findings have been published in

New technique brings the study of molecular configuration into the microscopic domain

Researchers at the Beckman Institute have developed a new variation of an infrared microscope with analytical capabilities, rendering it effective for probing the chemical conformations of biomolecules. Their work was published in

Six research teams win Carbon Hub funding

 E-Mail IMAGE: Rice University s Carbon Hub is a zero-emissions research initiative to produce technologies that split hydrocarbons into hydrogen fuel and solid carbon materials that can be used to make buildings, cars,. view more  Credit: Photo by Tommy LaVergne/Rice University HOUSTON - (March 8, 2021) - Carbon Hub, Rice University s zero-emissions research initiative, has awarded seed grants for six projects that will rapidly advance its vision for transforming the oil and gas sector into a leading provider of both clean hydrogen energy and solid carbon products that can be used in place of materials with large carbon footprints. Six research teams from Rice University; the University of Cambridge, England; the University of California, Berkeley; the IMDEA Materials Institute, Madrid; the Polytechnic University of Milan; the Massachusetts Institute of Technology; and the University of Dayton Research Institute were selected for one-year grants in response to Carbon

Taking 2D materials for a spin

2 transistor in an ESR sample tube. view more  Credit: University of Tsukuba Tsukuba, Japan and Warsaw, Poland - Scientists from the University of Tsukuba and a scientist from the Institute of High Pressure Physics detected and mapped the electronic spins moving in a working transistor made of molybdenum disulfide. This research may lead to much faster computers that take advantage of the natural magnetism of electrons, as opposed to just their charge. Spintronics is a new area of condensed matter physics that attempts to use the intrinsic magnetic moment of electrons, called spins, to perform calculations. This would be a major advance over all existing electronics that rely solely on the electron charge. However, it is difficult to detect these spins, and there are many unknowns regarding materials that can support the transport of spin-polarized electrons.

Heat-free optical switch would enable optical quantum computing chips

Credit: Lucas Schweickert In a potential boost for quantum computing and communication, a European research collaboration reported a new method of controlling and manipulating single photons without generating heat. The solution makes it possible to integrate optical switches and single-photon detectors in a single chip. Publishing in Nature Communications, the team reported to have developed an optical switch that is reconfigured with microscopic mechanical movement rather than heat, making the switch compatible with heat-sensitive single-photon detectors. Optical switches in use today work by locally heating light guides inside a semiconductor chip. This approach does not work for quantum optics, says co-author Samuel Gyger, a PhD student at KTH Royal Institute of Technology in Stockholm.

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