Articles tagged with Superconductors
A new model explains how pseudogap states form in high-temperature superconductors, featuring two competing electron orders: d-wave superconductivity and quadrupole density wave. This breakthrough sheds light on the high transition temperatures of ceramic copper oxide bonds.
Physicists found that changes in electrical resistivity depend on compound composition and can change sign, indicating an intimate connection between magnetism and superconductivity. The study uses single crystals and liquid helium to measure properties in the coexistence region, shedding light on iron-based superconductors.
Rice physicists Qimiao Si and Rong Yu discovered a new electronic state in which some electrons become frozen, while others remain mobile, leading to 'bad traffic' on the path to superconductivity. This phase, known as orbital-selective Mott phase, provides clues about the fundamental origins of superconductivity.
Scientists have successfully controlled the flow of electrons within layers of a superconductor using terahertz flashes. This technique enables precise switching on and off of superconductivity, paving the way for new applications in information processing.
Researchers have found that cuprate superconductors, known for carrying electrical current without resistance, cannot be fully explained by the traditional concept of Luttinger's theorem, which states that electrons carry current. This discovery reveals that there must be alternative explanations beyond electron behavior.
Recent advances enable control of individual atoms used in quantum information processing, paving the way for creation of powerful computers and highly sensitive detectors. Researchers explore ways to transmit quantum information over long distances and scale up the number of qubits.
Researchers have engineered a unique multilayer material that achieves extraordinary superconducting properties, including increased current-carrying capabilities and improved magnetic field stability. The breakthrough could lead to real-world applications in electronic devices, transportation, and power transmission.
Researchers at MIT have detected fluctuating charge-density waves in high-temperature superconductors, a key finding that could help understand the phenomenon and potentially lead to room-temperature superconductors. The new technique sheds light on the exotic state of matter, which has remained poorly understood despite intense research.
Researchers used spectroscopic imaging scanning tunneling microscopy to visualize the electronic properties around individual dopant atoms in an iron-based superconductor. The study found that dopants introduce elongated impurity states that scatter electrons in an asymmetric way, explaining most of the material's unusual properties.
Researchers from Russia, Spain, Belgium, the U.K. and the U.S. Department of Energy's Argonne National Laboratory have discovered a way to efficiently stabilize tiny magnetic vortices that interfere with superconductivity. This breakthrough could remove one of the most significant roadblocks to advances in superconductor technology.
Topological insulators have surface states that are conducting and possess unique properties, including the Aharanov-Bohm effect. Hybrid structures with superconductors show promise for new physics and technological applications, such as Majorana fermions and fractional Josephson effects.
Researchers from the Institute of Solid State Physics found that superconductivity is intrinsic to a bismuth-based layered material when doped with silver. The material's characteristics were measured using x-ray diffraction, magnetic susceptibility, electrical transport, and thermal transport.
Scientists have synthesized a new material with promising superconducting transition temperatures of 44 Kelvins, improving upon traditional copper-based high-temperature superconductors. The material, LixFe2Se2(NH3)y, displays an intercalation of potassium or rubidium, achieving a superconducting temperature of 32K.
Qubits can successfully exist in topological superconductor materials despite impurities and strong interactions. Majorana particles provide coherence-protection programs for qubits.
Researchers at the University of Toronto have successfully induced high-temperature superconductivity in a semiconductor by placing it in proximity to a topological insulator using Scotch poster tape. This breakthrough could lead to advancements in quantum computing and improvements in energy efficiency.
Scientists have discovered a way to manipulate superconducting materials using light. This breakthrough allows for the creation of ideal superconductors with continuous electrical current without losing any power. The research has potential applications in developing non-dissipated memories and improving energy efficiency.
Physicists at Max Planck Institute find competition between superconductivity and charge density waves in copper oxide ceramics, improving understanding of zero-resistance transport. The discovery could explain unusual interactions between superconducting and magnetic materials.
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.