A new method that precisely measures the mysterious behavior and magnetic properties of electrons flowing across the surface of quantum materials could open a path to next-generation electronics. A team of scientists has developed an innovative microscopy technique to detect the spin of electrons in topological insulators, a new kind of quantum material that could be used in applications such as spintronics and quantum computing.
In a first for metal-organic frameworks, USC scientists have demonstrated their metallic conductivity.
Using a new twist on a technique for imaging atomic structures, researchers at Princeton have detected a unique quantum property of the Majorana fermion, an elusive particle with the potential for use in quantum information systems.
The same electrostatic charge that can make hair stand on end and attach balloons to clothing could be an efficient way to drive atomically thin electronic memory devices of the future, according to a new Berkeley Lab study. Scientists have found a way to reversibly change the atomic structure of a 2-D material by injecting it with electrons. The process uses far less energy than current methods for changing the configuration of a material's structure.
UC Riverside physicists have developed a photodetector -- a device that converts light into electrons -- by combining two distinct inorganic materials and producing quantum mechanical processes that could revolutionize the way solar energy is collected. The researchers stacked two atomic layers of tungsten diselenide on a single atomic layer of molybdenum diselenide. Such stacking results in properties vastly different from those of the parent layers, allowing for customized electronic engineering at the tiniest possible scale.
'There is plenty of room at the bottom'. This is often quoted to highlight the value of available space that comes with miniaturization. Due to the amazing successes of modern fabrication techniques, one is surprised to hear that vast space below the surface, inside silicon, is not used. What more could be achieved, if the rest of the chip was opened to usage? Scientists now demonstrate such devices, published in latest issue of Nature Photonics.
Researchers at Columbia Engineering and UT-Austin continue to break new ground in developing magnet-free non-reciprocal components in modern semiconductor processes. They have built the first magnet-free non-reciprocal circulator on a silicon chip that operates at millimeter-wave frequencies, enabling circulators to be built in conventional semiconductor chips and operate at millimeter-wave frequencies, enabling full-duplex or two-way wireless.
A Columbia team has definitively observed an intensely studied anomaly in condensed matter physics--the even-denominator fractional quantum Hall state--via transport measurement in bilayer graphene. 'Observing the 5/2 state in any system is a remarkable scientific opportunity, since it encompasses some of the most perplexing concepts in modern condensed matter physics, such as emergence, quasi-particle formation, quantization, and even superconductivity ...[It may have] great potential for real-world applications, particularly in quantum computing.' (Science)
As microchips become smaller, the shrinking size of their copper interconnects leads to increased electrical resistivity at the nanoscale. Finding a solution to this technical bottleneck is a problem for the semiconductor industry; one possibility involves reducing the resistivity size effect by altering the crystalline orientation of interconnect materials. Researchers conducted electron transport measurements in epitaxial single-crystal layers of tungsten as one potential solution. The work is published in this week's Journal of Applied Physics.
Researchers from Tokyo Institute of Technology (Tokyo Tech) have discovered superconductivity in thin films of titanium oxide (Ti4O7) and gamma-phase trititanium pentoxide (γ-Ti3O5). The achievement advances fundamental knowledge of nanomaterials that could one day be used in the development of ultrafast computers.