Articles tagged with Superconduction
Physicists at the University of Texas at Austin have developed the thinnest superconducting metal layer made from lead, measuring only two atoms thick. This achievement lays the groundwork for future innovations in superconductor technologies.
A team of researchers at the University of Illinois has demonstrated macroscopic quantum tunneling in ultrathin superconducting nanowires. They observed a process called quantum phase slip, where packs of electrons tunnel together from higher to lower current states. This finding provides evidence that quantum mechanics governs large s...
Physicists at Ames Laboratory have demonstrated that the superconductivity mechanism in iron-arsenide superconductors is unique compared to all other known classes of superconductors. The team found a power-law variation of London penetration depth, suggesting electron pairing different from any other known superconductor.
Researchers at NRL propose a new paradigm for high-temperature superconductivity in iron-based materials, where string magnetism plays a crucial role. Theoretical models suggest that Fe ions are always magnetic but the observable moment is strongly reduced due to antiferromagnetic domains.
Scientists at Uppsala University have explained the 'hidden order' phenomenon, a long-sought mystery in materials science. The discovery can control and exploit new material properties, crucial for future energy supply.
Researchers found oxypnictides exhibit similarities with copper-oxide high temperature superconductors, both emerging from magnetic states. This discovery may lead to designing new superconducting materials and resolving the underlying physics behind high temperature superconductors.
Scientists at Argonne National Laboratory used inelastic neutron scattering to show that a new family of iron arsenide superconductors exhibit unconventional superconductivity. The research challenges conventional BCS theory and suggests that antiferromagnetic fluctuations may be responsible for the observed phenomenon.
Researchers at Los Alamos National Laboratory have proposed a new explanation for superconductivity that doesn't rely on phonons. By introducing quantum fluctuations and pressure changes, they observed a quantum critical point where electrons pair up in a previously undescribed state of matter.
Scientists at Brookhaven National Laboratory have successfully engineered two-layer thin films with a nanometer-thin region of superconductivity, elevating the temperature of superconductivity to over 50 kelvin. This achievement brings researchers closer to fabricating useful three-terminal superconducting devices.
Researchers at University of Montreal discover that superconductivity can induce magnetism, contrary to previous belief. The experiment shows magnetic order in a material only when it's in the superconducting state.
MIT researchers have developed a technique called amplitude spectroscopy that can characterize the properties of artificial atoms used in quantum computing. This approach enables the study of quantum entities over broad frequency ranges, which is essential for understanding and engineering atomic-scale devices.
Physicist John R. Clem developed a theory that reduces AC losses in bifilar fault-current limiters, enabling more efficient and cost-effective power grid protection. The research supports the development of commercial products by Siemens and American Superconductor.
A team of researchers from UC Davis and Los Alamos National Laboratory have found a simple way to calculate the temperature at which the Kondo liquid emerges in heavy-electron materials, leading to new understanding of superconductivity. The discovery may help researchers find organizing principles of heavy-electron superconductivity.
Physicists at Rutgers University have studied exotic chemical compounds containing neptunium and plutonium, revealing a new connection between magnetism and superconductivity. The findings suggest that these materials could lead to room-temperature superconductors.
Researchers have discovered that magnetic domains in type-I superconducting lead exhibit patterns similar to everyday froths like soap foam or frothed milk. The team found that suprafroths, a new kind of froth system created by applying a magnetic field, adhere to statistical laws governing the behavior of froths.
Researchers at Johns Hopkins University have unlocked secrets of newly discovered iron-based high-temperature superconductors, revealing new physics and mysteries. The findings suggest a need for fresh theoretical models to develop superconductors that can operate at room temperature.
Researchers at UT Knoxville and Oak Ridge National Laboratory have discovered new superconducting materials with higher temperatures than conventional ones. The study found that these materials share a common trait with other high-temperature superconductors, shedding light on the tie between magnetism and superconductivity.
Researchers at Florida State University have discovered a novel superconducting material that operates at relatively high temperatures and tolerates high magnetic fields, making it suitable for a range of applications. The discovery offers promise for improving MRI machines, research magnets, and electric motors.
Researchers at NIST discovered iron-based superconductors with magnetism similar to copper-oxide materials. These similarities suggest a critical interplay between magnetism and superconductivity in high-temperature superconductors.
Researchers found that high pressure can induce superconductivity in high-temperature superconductors, allowing them to operate at higher temperatures. This breakthrough could change the energy system by providing a new approach to studying and harnessing these materials.
High-temperature superconductors do not rely on a 'glue' to bind electrons, according to Princeton University researchers. The secret to their behavior lies in the natural repulsion between electrons, which signals their ability to form pairs and flow without resistance when cooled to low temperatures.
The study reveals that high-temperature superconductors do not rely on a 'glue' binding electrons, but instead utilize their strong repulsive forces to facilitate superconductivity. The researchers used specialized equipment to measure electron pairing mechanisms and found unique quantum properties at warmer temperatures.
Researchers discovered that scattering by impurities occurs in both the pseudogap and superconductive states, challenging existing theories. This finding could help understand why certain materials can superconduct at high temperatures.
Researchers propose new mechanism for superconductivity in materials without phonon interaction, potentially leading to higher temperatures. This discovery could pave the way for a new class of high-temperature superconductors.
Researchers have discovered a new type of phase transition in vanadium metal under extreme pressure, which contradicts the behavior of most other elements. This unusual lattice dynamics is driven by a huge change in electronic structure, providing a new explanation for the record-high superconducting temperature.
Scientists at NIST have developed a new component for potential ultra-powerful quantum computers using a microfabricated aluminum cable with superconducting circuits. This 'quantum bus' can transport data between two or more qubits, enabling faster calculations and potentially solving complex mathematical problems.
Researchers at Michigan State University have made a unique measurement of an exotic oxygen nucleus, confirming a theoretical model predicting dramatic changes in structure as oxygen nuclei approach their limits. The experiment used new detection tools, making it possible to explore isotopes near the extreme edges of existence.
Researchers at Ames Laboratory have observed two-dimensional equilibrium patterns in lead samples when in its superconducting state, below 7.2 Kelvin. These complex patterns differ from the long-held textbook model proposed by Lev Landau and represent a significant contribution to the field of superconductivity.
Critical high-temperature superconducting materials exhibit metallic behavior, similar to ordinary metals. This discovery paves the way for a deeper understanding and potentially higher critical temperatures, bringing us closer to room temperature superconductivity.
Scientists have discovered tiny patches of superconductivity in ceramic materials at higher temperatures than previously known, defying widely accepted explanations for high-temperature superconductivity. The research uses nanoscale imaging techniques to map superconducting properties on the scale of single atoms.
Laura Wade, associate director at the Texas Center for Superconductivity, has received the Distinguished Service Award from the National Council of University Research Administrators. Her colleagues praised her commitment to the profession, citing her tireless efforts in grant proposals and educational workshops.
Brookhaven researchers have learned how to grow better samples of LBCO, allowing for extensive studies on its properties. The study reveals that the high-temperature superconductor has distinct insulating-like properties and a characteristic energy gap.
Researchers at NIST found a 40% reduction in critical current due to compressive strain, which can be accommodated in design but requires knowledge ahead of time for large-scale devices. The discovery provides new insights into the fundamental mechanism behind high-temperature superconductivity.
A research team at Northwestern University has identified Bi-2212 as a suitable material for the new wires needed to build a 30 Tesla magnet, a significant improvement over current materials. The findings set a speed limit for high-temperature superconductivity, which could enable powerful magnets without helium cooling requirements.
A miniscule detector developed by Merlijn Hajenius at Delft University of Technology has shown promising results for studying cosmic radiation and its impact on the universe. The detector, which uses a superconductor to detect terahertz frequencies, offers new insights into star systems and planetary birth.
High-temperature superconductors exhibit a 'pseudogap' when electrons are bound together, but the new study reveals the same cloverleaf-shaped energy gap appears in both non-superconducting and superconducting states. This finding may provide a key to understanding the superconducting phenomenon.
Ultra-narrow superconducting wires show enhanced superconductivity when exposed to strong magnetic fields. Researchers developed a theory explaining this phenomenon, proposing that oxygen exposure forms magnetic moments on the wire surfaces.
Scientists at NIST and partner institutions report strong evidence that magnetic fluctuations enable resistance-free passage of electric current in high-temperature superconductors. The findings should open new avenues of research into the exotic properties of these materials.
Researchers have created a conveyor belt for magnetic flux vortices in superconductors, allowing them to be removed from targeted regions and improving device performance. The conveyor belt is assembled out of a line of vortices controlled by a time-varying magnetic field.
Researchers at National Institute of Standards and Technology (NIST) have developed a new design for X-ray sensors that can measure energies with an uncertainty of only 2.4 electron volts (eV), nearly doubling the resolution of experimental X-ray sensors. The improved design is expected to enable precise identification of the X-ray 'fi...
The university has installed a 800 MHz German-made Bruker magnet, funded by a $2 million grant from the National Institutes of Health. The magnet is over twice as powerful as average hospital-based MRI machines and will be used for determining the three-dimensional structure and motion of biological molecules.
The team successfully fabricated four niobium single cell cavities from large-grain and single crystal ingots, achieving an accelerating gradient of 45 MV/m, exceeding the ILC specification. This new fabrication process simplifies manufacturing, reduces cost, and improves cavity performance.
Scientists have found magnetic fluctuations responsible for superconductivity in a compound called plutonium-cobalt-pentagallium (PuCoGa5). This 'unconventional superconductivity' could lead to a new class of superconducting materials and the synthesis of room-temperature superconductors.
Researchers created high-quality superconducting wires with molecular dimensions, showing that theories apply to molecular-scale superconductors. The nanowires showed a remarkably weak effect on magnetic fields, contradicting previous expectations.
The Levitated Dipole Experiment (LDX) at MIT and Columbia University is conducting basic studies of confined high-temperature matter and investigating plasma for potential fusion energy. Scientists are using powerful magnets to initiate, sustain, and control plasma in a process that releases large amounts of energy.
Researchers have developed a simpler design for x-ray detectors that offers 30 times better energy resolution than existing detectors, enabling more accurate identification of elements. The new design combines normal and superconducting metals into one layer, reducing fabrication steps and increasing sensor stability.
A team of scientists at Los Alamos National Laboratory discovered a way to control defects in superconducting materials, leading to a two-to-five-fold increase in current densities in high magnetic fields. This breakthrough could revolutionize the development of powerful and energy-efficient superconducting electric motors and generators.
Researchers have explained puzzling behavior in a high-temperature superconductor by discovering an electronic crystal, where electrons arrange themselves into a neat pattern. This phenomenon occurs in a phase called pseudogap and was observed using a highly sensitive scanning tunneling microscope.
Researchers discovered a significant deviation from expected symmetry in the density of states of excitations in high-temperature superconducting tunnel junctions. The findings suggest that crystals of high-temperature superconductors, with a titanate layer, exhibit intrinsic particle-hole asymmetry.
The new magnet features a uniform field of 21.1 Tesla in a volume 64 times larger than typical NMR systems, allowing for a wider range of scientific experiments. Scientists can now explore new avenues in chemical and biomedical science using this unique national resource.
Researchers at Ames Laboratory have successfully developed a new type of superconductor, carbon-doped magnesium diboride, which can withstand higher magnetic fields. The material has a critical temperature of 39 Kelvin, making it more economical to use compared to other superconductors.
Researchers at the University of Illinois have found a hidden pattern in cuprate superconductors that may help explain high-temperature superconductivity. The pattern, which forms when electrons are heated, is a distinct type of movement in which electrons organize into a checkerboard pattern.
A new synthesis method for sodium cobalt oxyhydrate, a type of superconductor containing water, has been developed by Brookhaven chemist Sangmoon Park. This method produces large quantities of the material without requiring hazardous substances, making it easier to further analyze its properties.
New study enhances earlier paper on congestive heart failure analysis by adding clinical data, enabling mortality risk determination. Researchers also discover new type of superconductor that carries more current and remains stable in higher magnetic fields. Additionally, carbon nanotube transistors exhibit performance improvements reg...
Jacek Sekutowicz, a visiting senior scientist at Jefferson Lab, is leading the way in cavity redesign as part of a proposed 12 GeV upgrade. He and his colleagues aim to reduce or eliminate parasitic modes using high order mode couplers, resulting in highly efficient beam passage through the cavities.
The National Science Foundation approves a major change in LEPP's investigation into elementary particles, shifting focus to charm quark physics. Physicists will make precision measurements of the strong force using CESR and CLEO facilities.
New devices can control the motion of magnetic flux quanta, allowing for precise manipulation of magnetic fields within superconducting materials. This enables the creation of specific magnetic profiles, facilitating applications such as removing unwanted flux and magnetically focusing nearby particles.
Theoretical study reveals MgB2's anomalous behavior arises from two separate electron populations with different bonding arrangements. The research suggests the possibility of creating new materials with analogous electronic structure, providing insights into high-temperature superconductivity.
The researchers fabricated superconducting nanowires from specially prepared fluorinated carbon nanotubes, which are insulators. This technique allows for the fabrication of even thinner nanowires and sheds new light on superconducting phase transitions.
Researchers developed a new method to wind coils from fragile conductor, using an insulating layer folded lengthways around the tape to prevent discharges. The new superconducting transformer is compact and light, making it attractive for use in trains and large town centres.