Articles tagged with Superconductors
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Majorana particles may form the basis of quantum computers, while also being linked to dark matter. Theoretical physicists at Dartmouth College have proposed a model suggesting Majoranas could exist in topological superconductors.
Researchers examine relationship between disorder and quantum coherence in materials, finding that a pinch of disorder is good but too much can destroy coherence. The Joint Quantum Institute experiment uses laser beams to introduce slight disorder into rubidium atoms, revealing how it affects their behavior.
Researchers at Ames Laboratory found that magnetism helps or is responsible for superconductivity in iron-based superconductors. By measuring the London penetration depth, they revealed basic information about the material's behavior in the superconducting state.
Electronic asymmetry was discovered in iron-based high-temperature superconductors, providing new insights into their behavior. The study found that this asymmetry is a result of collective electronic behavior and may be essential for the material's superconductivity.
Researchers at the University of Miami introduced a breakthrough theory that explains high-temperature superconductivity. The team found that specific quantum effects can generate superpositions of individual states, providing an effective glue to repair the system and allow superconducting behavior to emerge.
Researchers used ultrafast laser ARPES to study the electronic states of high-temperature superconductors. The technique revealed trends in Cooper pair formation, which may be connected to the mechanism holding them together.
Researchers at Brookhaven National Laboratory and collaborators provide direct evidence for magnetism's role in forming Cooper pairs, a key to high-temperature superconductivity. The findings strengthen confidence in using this theory to identify new materials with improved properties.
Researchers used 100-femtosecond laser pulses to capture fine-grained data on electron relaxation and its influence on superconducting properties. This technique reveals that high-critical temperatures are driven by purely electronic processes.
Researchers at Universitat Autonoma de Barcelona manufacture a cylinder that hides contents and makes them invisible to magnetic fields, paving the way for the invisibility of light. The device uses high-temperature superconductor material and is fully isolated from external magnetic fields.
Researchers have discovered unexpected superconductivity in a type of compound at higher pressures, contradicting earlier findings. The study reveals a transition temperature that disappears and reappears under extreme pressure conditions, sparking further research into its causes.
A team of researchers has discovered an iron-based superconductor that operates at the highest known temperature for its class, reaching 47 degrees Kelvin. The crystal's unusual property is that it can collapse by up to 10% when a smaller atom is substituted for calcium in some of its hubs.
Researchers at University College London discovered electronic stripes on graphene sheets, a finding that could revolutionize the exploitation of this material. The discovery was made using a scanning tunneling microscope and found that extra electrons arrange themselves into nanometer-scale stripes spontaneously.
North Carolina State University researchers introduce a computational approach to improve the utility of superconductive materials. By interacting with industry, they've identified ways to optimize YBCO conductors, reducing quench risk and increasing performance. This breakthrough could accelerate the use of YBCO in emerging technologies.
Researchers at Tel Aviv University have developed innovative superconductors using sapphire fibers, capable of carrying 40 times more electricity than copper wires. This breakthrough has the potential to transform energy transfer, grid stability, and renewable energy collection.
Scientists at University College London and Sapienza University of Rome have developed a method to manipulate high-temperature superconductivity in materials. By illuminating with X-rays, researchers can create and control tiny superconducting structures, enabling the creation of new electronic devices.
Researchers at the University of California, Santa Cruz, have made significant progress in explaining the unusual properties of high-temperature superconductors using a new theory. The theory, known as Extremely Correlated Fermi Liquids, shows remarkable agreement with experimental data from studies of high-temperature superconductors.
Scientists have discovered a link between two competing states of a cuprate superconductor and developed a mathematical theory to describe their relationship. The new theory should help predict the behavior of the material under varying conditions, shedding light on its potential for improving energy efficiency and storage.
A team of researchers has uncovered a startling new feature of lanthanum strontium manganese oxide, which can change its stripes from fluctuating to static and back. At the right temperature, it switches from a metallic state to an insulator, exhibiting colossal conductivity changes.
A University at Buffalo team proposes using sodium to convert hydrogen into a superconducting metal, which could improve power transmission efficiency. The researchers used an open-source computer program to find suitable sodium polyhydrides that become metallic at lower pressures than previously thought.
Researchers at UCSB successfully reproduced the Josephson junction using Einstein's general theory of relativity, a breakthrough that sheds new light on non-gravitational physics. The discovery has significant implications for understanding superconductivity and the development of room-temperature superconductors.
New research reveals that bubbles in the fabrication process of high-temperature superconductor Bi2212 limit its critical current density, blocking connectivity and reducing electrical resistance. Densification of filaments before melting could help eliminate bubble formation and improve material performance.
Researchers found that ordered vacancies in iron pnictides can give rise to superconductivity, providing a potential explanation for the similar behavior between different compounds. This discovery has implications for the broader use of these materials on an industrial scale.
Researchers used a precise atom-by-atom layering technique to fabricate ultrathin transistor-like devices, studying the conditions that turn insulating materials into high-temperature superconductors. The study revealed that as mobile charge carriers are increased, cuprate films transition from insulating to superconducting behavior wh...
Researchers at MIT have created ultracold gas clouds that repel each other, unlike normal gases. This discovery could help explain the behavior of high-temperature superconductors and neutron stars.
Researchers discovered a distinct order in electrons during pseudogap state, present both above and below superconducting temperatures. The findings provide a clear signpost for follow-up research to uncover the nature of the pseudogap order.
A team of scientists has found that the pseudogap in high-temperature superconductors is not a gradual transition to superconductivity, but rather a distinct phase of matter. This discovery challenges current understanding and opens up new possibilities for achieving superconductivity at higher temperatures.
Researchers at the University of Illinois have developed a model for interacting electrons in unconventional superconductors by mimicking the behavior of charged black holes. This work resolves the Mott problem, which has puzzled physicists for decades, and sheds light on the origin of superconductivity in copper oxide materials.
Researchers found a superfluid in the neutron star's core that could defy gravity and a superconductor that can sustain electricity forever. This discovery provides insight into the life cycles of stars and behavior at high densities.
Researchers at NIST have developed compact high-temperature superconducting cables with improved strain tolerance, enabling thinner and more flexible cables for electric power grid applications. The new cables may also be used in scientific and medical equipment, as well as for military applications such as HTS power transmission.
Researchers developed a method to isolate individual Andreev bound states in graphene-superconductor junctions, allowing for the measurement and manipulation of these unique states. This breakthrough may enable new applications in quantum computing and other fields.
Researchers at Johns Hopkins University and Brookhaven National Laboratory measured superconducting fluctuations in a superconductor, finding they disappear 10-15 Kelvin above the transition temperature. This suggests electron pairs lose coherence rather than break apart at Tc, driving the transition to a non-superconducting state.
Neutron analysis reveals that magnetic interactions responsible for high-temperature superconductivity occur in a next-nearest-neighbor ordering of atoms, not just adjacent ones. This discovery suggests that superconductivity shares a common magnetic origin among different materials.
Physicists from Rutgers University and the University of Tokyo unveil a superconducting material with unprecedented properties, reaching quantum criticality in its natural state. The discovery challenges current understanding of materials science and may lead to breakthroughs in future superconductors and computer electronics.
A US-European team has found that magnetism drives unconventional superconductivity in heavy-fermion materials, with magnetic energy saved by over 10 times when the system enters a superconducting state. The study provides evidence for collective fluctuations of electrons at the border of magnetism as capable of driving superconductivity.
Researchers at Ruhr-University Bochum have confirmed the existence of triplet superconductivity experimentally, a phenomenon previously only predicted theoretically. This breakthrough could lead to more efficient energy storage and transmission in devices.
Researchers have created a material that exhibits dual electronic properties, acting as both a normal superconductor and a metal at low temperatures. This discovery could enable the development of energy-efficient quantum computers with fault-resistant capabilities, but significant technical hurdles remain to be overcome.
Researchers at Rice University have successfully created a precision simulator for superconductors using ultracold atomic gas. By trapping and holding lithium atoms in beams of light, they can observe how electrons would behave in particular types of superconductors.
Researchers at Helmholtz-Zentrum Berlin (HZB) have discovered a universal magnetic signature among all iron-based superconductors. Despite differences in magnetism, these materials display the same magnetic resonance signal as their parent compounds, hinting at a new understanding of how superconductivity arises.
Physicists have discovered a new copper-based compound that exhibits properties never seen before in a superconductor. The material can be made to conduct electricity with or without electrons, offering a new path to studying the relationship between these two methods of creating superconductors.
Researchers at Carnegie Institution find that increasing pressure can induce higher transition temperatures in superconductors, challenging current materials. The discovery opens a new path to designing and engineering high-temperature superconductors.
Researchers found a 'broken symmetry' where electrons arrange differently in high-temperature cuprate superconductors, enabling new research on overcoming the pseudogap phase. This discovery could lead to room-temperature superconductors by understanding how materials work and identifying key symmetries.
Researchers found asymmetrical behavior in electrons' tunneling ability depending on oxygen atom position, a significant step toward identifying pseudogap state and its effect on superconductivity. The discovery may lead to new approaches to achieving room-temperature superconductivity in copper-oxides.
JILA team finds similar behavior in ultracold atomic gases and high-temperature superconductors, supporting the idea that studying superfluidity in atomic gases can help understand complicated superconductors. The discovery lends support to the concept of a 'pseudo-gap region' where atom pairing occurs above critical temperature.
Researchers at the University of Florida have discovered that grain boundaries in high-temperature ceramic superconductors impede electrical current. The study, published in Nature Physics, provides a theoretical model explaining why these barriers limit the potential of superconductors.
Physicists use iron oxychalcogenides to study Mott localization in undoped pnictide parent compounds, providing further evidence that these systems are on the verge of Mott localization. This proximity to Mott localization endows the system with strong quantum magnetic fluctuations.
New images reveal electrons flowing primarily along crystal grain boundaries, providing clues to the origin of superconductivity in pnictides. The discovery may help physicists develop better high-temperature superconductors that could save energy and enable innovative applications.
The University of Houston has executed two licensing agreements with SuperPower, covering second-generation high-temperature superconductor (HTS) wire and the fundamental composition of matter patent for HTS discovered by Paul Chu in 1987. These agreements enable SuperPower to advance its 2G HTS wire development for various applications.
High-temperature superconducting wires can transmit up to 10 times more power than traditional copper cables without significant losses. This technology has the potential to revolutionize electricity generation, transmission, and use, reducing carbon emissions and offsetting the emission of equivalent conventional power plants.
Researchers have successfully fabricated nanoscale molecular superconducting wires using organic salts, opening up new possibilities for energy and electronics applications. The discovery could lead to the development of novel materials that can work at higher temperatures.
A team of researchers has discovered that in copper-based superconductors, tiny areas of weak superconductivity can hold up at higher temperatures when surrounded by regions of strong superconductivity. This finding could lead to the creation of new materials with improved superconducting properties.
New neutron studies provide strong evidence that magnetic properties are behind high-temperature superconductivity in both copper-based and iron-based materials. The research suggests that spin excitations play a key role in the formation of macroscopic quantum states giving rise to superconductivity.
Researchers found a direct connection between electrons' conductivity and magnetic properties in iron-based superconductors. The study sheds light on high-temperature superconductivity's fundamental nature.
Scientists have developed a method to control the buildup of hydrogen fluoride gas during crystal growth, leading to improved production and performance of materials. The new approach uses an HF absorber material to selectively remove hydrogen fluoride, preserving the uniformity of the crystal growth environment.
A Rice University-led team will build a simulator capable of tackling high-temperature superconductivity using ultracold atoms and lasers. The goal is to study complex materials like cuprate superconductors, which are still not fully understood.
Researchers confirm the existence of a 'phase-incoherent' superconductor at higher temperatures, providing insight into the conditions necessary for superconductivity to occur. The study's findings may help scientists develop practical devices such as zero-loss power transmission lines.
UBC researchers have found that single-band Hubbard physics fails to explain certain conditions in high-temperature superconductors. The study suggests new theoretical approaches may be needed, revealing potentially new or less-bizarre behavior.
Two papers published in APS Physics journals describe different electron behavior in iron-based superconductors, suggesting distinct origins. The findings challenge theories on the similarities between these materials and cuprates, potentially altering the direction of research in this field.
Researchers at NIST have discovered that reducing mechanical strain at grain boundaries significantly improves high-temperature superconductor performance. By mitigating the effect of granularity, they could enable more efficient electrical transmission lines, increased power grid reliability, and advanced cancer treatment facilities.
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.
Researchers discovered europium becomes superconducting under high pressure, expanding the list of elemental superconductors. This breakthrough adds data to theoretical models of superconductivity, potentially leading to room-temperature superconductors.