Articles tagged with Superconduction
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Researchers have developed a way to increase the amount of electrical current an iron-based material can carry while maintaining its superconducting properties and raising its critical temperature. The method uses low-energy proton bombardment to introduce defects in the material's crystal structure, pinning magnetic vortices and impro...
Hydrogen sulfide superconductor exhibits two phases: cubic and hexagonal. Researchers' findings mark significant step towards room-temperature superconductors.
The University of Geneva team tested a scenario proposed by Anthony Leggett, finding it contradicts experimental results. The study reveals the importance of chemical doping in understanding high Tc superconductivity.
Researchers found that local electron pairs form a 'superfluid' that flows without resistance, enabling the material to conduct electricity at unusually high temperatures. This discovery challenges standard theory of superconductivity and paves the way for engineering materials that become superconducting at room temperature.
Researchers at IBS Centre for Correlated Electron Systems have revised existing theories on iron-based superconductors. By doping electrons onto the surface of a material, they found no correlation between the transition temperature and the nesting effect, challenging current understanding of these materials.
The PPPL will optimize lithium delivery systems for long-pulse plasmas on the Experimental Advanced Superconducting Tokamak (EAST) in China. The goal is to protect plasma-facing components and prevent impurities from halting fusion reactions.
Hokkaido University researchers have synthesized a platinum-based superconducting material with unique crystal structure, which becomes superconducting at 10 GPa but returns to non-superconductive state at 15 GPa. The high-pressure synthesis method holds promise for further exploration of unknown phases in various materials.
A high-temperature superconducting coil developed by UH scientists boosts signal-to-noise ratio, revealing brain structures not easily visualized with conventional coils. The new technology can also acquire images in a shorter time than conventional coils.
Australian researchers use 3-D printing to create a resonant microwave cavity via an aluminum-silicon alloy that boasts superconductivity when cooled below the critical temperature of aluminum. The study explores the superconducting properties of 3-D printed parts and demonstrates the potential for rapid prototyping in various fields.
Researchers found charge density waves extending deeply into superconducting regions, allowing for new ways to manipulate superconductivity. The discovery paves the way to controlling the superconducting state itself.
A research group in Japan discovered a new compound H5S2 showing a new superconductivity phase through computer simulation. Further research is predicted to clarify the mechanism behind high-temperature superconductivity in hydrogen sulfide.
The QUTIS group and Google have collaborated on a pioneering experiment that digitizes analogue quantum computation using superconducting circuits. This breakthrough enables the universal solvability of optimization problems, useful in finance, materials science, and pharmaceuticals.
A researcher at Jefferson Lab has been awarded a $500K grant to develop new techniques for improving the efficiency of superconducting niobium cavities, which are used in particle accelerators. The goal is to reduce power consumption and increase the performance of these critical components.
Scientists discover high Tc superconductivity at the interface between FeSe and SrTiO3 due to strong electron-phonon coupling. The symmetry of the pairing mechanism is also crucial in determining the binding energy and superconducting transition temperature.
Researchers have discovered that quantum effects play a crucial role in the superconducting properties of hydrogen sulphide, leading to record-breaking temperatures. The study suggests that symmetrical hydrogen bonds and quantum fluctuations are responsible for the material's high-temperature superconductivity.
Researchers create thin films of a copper-oxide compound to study its electronic behavior at near absolute zero. They find that decreasing doping levels or increasing magnetic fields suppresses superconductivity, while Hall resistivity measurements reveal quantum fluctuations and electronic memory.
Researchers at Rice University have determined that 2D boron is metallic and can transmit electrons with no resistance, making it a promising material for superconductivity. The discovery may lead to breakthroughs in small-scale superconducting circuits.
High-temperature superconductors exhibit two coexisting states, contradicting the competition-based models previously assumed. The study reveals electronic densities are a combination of separate effects, proposing a new model for understanding these materials.
Builders of future superconducting quantum computers may learn from semiconductors to simplify operation and improve qubits. Researchers found an efficient implementation using novel control approaches, eliminating costly overheads for control and reducing gate error rates.
Researchers at Michigan State University have found particles of stardust, known as pre-solar grains, in meteoritic material on Earth. These grains are believed to have formed in stellar explosions billions of years ago and contain unusually high amounts of the rare isotope silicon-30.
A novel in-situ plasma processing technique has been successfully applied to superconducting cavities at the Spallation Neutron Source (SNS), significantly improving neutron production and accelerating beam energy. The technique uses hot plasma to clean hydrocarbon contamination from surfaces, reducing maintenance time and costs.
Physicist Chandra Varma's theory has been experimentally confirmed, favoring one theory and ruling out others for high-temperature superconductivity. The research opens new prospects for studying the mechanism in other systems with strongly correlated electrons.
Electrons with 'no mass' in graphene become superconducting at 4 K, paving the way for ultrahigh-speed nano devices. The superconductivity is driven by electron transfer from calcium atoms to graphene sheets.
Researchers at the University of Buffalo found that phosphine's superconductivity likely results from the compound decomposing into other products containing phosphorus and hydrogen. This understanding could aid in creating new superconducting materials, which would revolutionize electric power infrastructure by reducing energy waste.
A multidisciplinary team at Cornell has created a three-dimensional gyroidal superconductor made of niobium nitride, which could lead to novel property profiles and transition temperatures. The breakthrough was achieved using organic block copolymers and involves heating, cooling, and reheating the material.
NIST researchers developed a new material for detecting photons, capturing more quantum information by reducing jitter by 74 picoseconds. This improvement enables faster communications and higher bit rates, crucial for receiving faint signals reliably in quantum teleportation experiments and physics theories testing.
Researchers Mikhail Feigel'man and Lev Ioffe describe pseudogapped superconductors with disorderly atomic structures. Their theory explains how superconducting current density depends on pseudogap width in these materials.
Scientists have discovered that ultrathin layers of molybden disulfide (MoS2) remain superconducting under high magnetic fields, contrary to conventional physics. This phenomenon has significant implications for future quantum computing applications and could lead to breakthroughs in information storage.
Researchers have isolated single-layer NbSe2 as a genuine 2D electronic phenomenon exhibiting spatial modulation of electron density and atomic lattice. The material remains a superconductor with critical temperature TC = 1.9 K despite dimensional reduction.
Scientists create ultra-thin FeSe films using electrochemical etching, increasing superconducting transition temperature from bulk form to 40K. This method enables exploration of nontrivial physical phenomena in 2D materials, previously difficult to address.
Physicists from France and Russia have discovered magnetic disturbances resembling little oscillating stars in a 2D superconductor layer. These 'nanostars' are caused by a single magnetic atom and are more sustainable than previous observations, bringing us closer to developing quantum computers.
Chalmers researchers discovered a new mechanism for breaking time-reversal symmetry in high-temperature superconductors, resulting in spontaneous magnetisation. The study utilizes a software package that leverages massive parallelization and graphics processing units to simulate realistic systems.
Researchers at MIT propose a compact tokamak fusion reactor that could produce significant power in a decade. The new design uses commercially available superconductors to achieve higher magnetic fields, enabling more efficient fusion reactions.
Researchers at Aalto University predicted the existence of topological superconductors on metallic surfaces and thin films using mathematical models. The discovery could lead to new quantum states and potential applications in quantum computing.
Three scientists have been recognized for their groundbreaking discoveries in superconducting materials, including Xianhui Chen, Zachary Fisk, and Zhongxian Zhao. The prize is awarded annually by the Texas Center for Superconductivity to innovators in the field of superconducting materials.
Researchers at Tohoku University have successfully fabricated an atomically thin, high-temperature superconductor film with a Tc of up to 60 K, exceeding that of bulk FeSe. This finding enables the control and tuning of Tc, opening up new avenues for investigating mechanism and developing next-gen nano-scale superconducting devices.
Researchers have discovered a key link between superconductivity and structure in iron arsenide compounds, which could potentially lead to higher-temperature superconductivity. Under pressure, the compound undergoes a structural change that leads to a loss of superconducting ability.
Researchers have discovered electrons that form pairs but don't reach a superconducting state, a breakthrough that could lead to new materials with room temperature superconductivity. This finding has significant implications for technologies such as high-speed rail and quantum computers.
A research team led by Tohoku University has discovered a new family of molecular superconductors that achieve the highest known critical temperature. The discovery, published in Science Advances, reveals a new state of matter - the Jahn-Teller metal - where balancing molecular and itinerant character leads to maximum Tc.
A novel superconducting transistor can be switched reversibly between ON and OFF by light-irradiation, opening a way to new high-speed devices. The device uses a photo-active electric double layer and can be controlled by both gate-voltage and light-irradiation.
Researchers at the University of Chicago have successfully created a roton structure in an atomic superfluid of cesium-133 using the shaken lattice technique. This breakthrough enables experimentation on long-cloaked mysteries of the roton, potentially paving the way for increased robustness in superconductors.
Recent breakthroughs in iron-based superconductors feature the highest transition temperatures next to copper oxides, with a focus on understanding their unconventional superconductivity. The study outlines the interplay between magnetism and superconductivity, electronic properties, and crystal structures of these materials.
Researchers have developed a new type of nanowire crystal that combines semiconducting and metallic materials, exhibiting superconducting properties at low temperatures. The breakthrough could play a central role in the development of future electronics, including chips with billions of identical semiconductor-metal nanowire hybrids.
Cuprate superconductors exhibit unique properties, including high-temperature superconductivity and magnetic behavior. Researchers at EPFL used Resonant Inelastic X-ray Scattering to study the electronic structure of cuprates, finding that spin interactions play a crucial role in their superconducting state.
Scientists at LMU München have synthesized a ferromagnetic superconducting compound that exhibits both properties simultaneously. The new compound, (Li,Fe)OH(FeSe), can coexist with ferromagnetism and superconductivity even at higher temperatures than previously known.
Britton Plourde's new cryogen-free adiabatic demagnetization refrigerator allows for rapid development of devices for quantum information science. The system enables the study of superposition and quantum states at extremely low temperatures.
Researchers from NC State University have developed a titania-based material that can effectively insulate superconducting magnets, allowing for the preservation of electrical pathways and efficient heat dissipation. This breakthrough has significant implications for next-generation power generation technologies and medical devices.
Paul Chu and Venkat Selvamanickam are recognized for their sustained service and significant contributions to applied superconductor materials technology. The awards acknowledge their work in advancing high-temperature superconductivity, with applications in commercialization.
A team of engineers has created a portable device for nuclear magnetic resonance (NMR) spectroscopy using minuscule chips, reducing the footprint for multidimensional analysis of molecules. The devices can operate accurately over a wide temperature range and may be assembled into a massively parallel array to accelerate analysis of com...
Researchers at NIFS have successfully fabricated a large-scale magnet conductor using a novel method that stacks yttrium-based high-temperature superconducting tapes. The conductor achieved an electrical current of 100,000 amperes and a current density exceeding 40 A/mm2.
Researchers at Dartmouth College have developed a breakthrough laser that uses an artificial atom to produce light, enabling the potential development of more powerful quantum computers. The new laser relies on superconducting electron pairs and has the ability to transmit information between quantum devices.
Researchers at Oak Ridge National Laboratory have discovered clues for inducing superconductivity in an iron-based material. By altering the Fermi surface, they were able to explain why certain structural phases prevent superconductivity at low temperatures.
Scientists observe quantum critical point in TiSe2, challenging prevailing theory on superconductivity emergence. Domain wall formation connected to superconductivity, not CDW melting, reveals new phase boundary with implications for understanding superconducting behavior.
Researchers from University of Waterloo and Harvard discover pseudogap phase's quantum states, which could unlock room-temperature superconductors. The findings address a crucial unsolved problem in theoretical condensed matter physics.
Researchers at SLAC and Stanford University discovered a potential way to make graphene superconducting, which could transform the engineering of materials for nanoscale electronic devices. They found that electrons scatter between graphene and calcium layers, interacting with natural vibrations to conduct electricity without resistance.
Scientists at the Ames Laboratory used ultra-fast laser spectroscopy to examine the electronic properties of iron-based superconductors, finding evidence of an electronically-driven nematic order. This breakthrough sheds light on the transition from normal to superconducting states and holds potential for advancing energy technologies.
Scientists at the University of Vienna have unveiled the superconducting pairing mechanism in calcium-doped graphene using the Angle-resolved photoemission spectroscopy (ARPES) method. The findings reveal that calcium is the most promising candidate to induce superconductivity in graphene, with a critical temperature of about 1.5K.
Researchers at Oak Ridge National Laboratory created a framework to understand the interplay of superconductivity and inhomogeneity. The work reveals that strong superconductivity comes from highly doped regions in the crystal where dopants are clustered, potentially leading to higher performance superconductors.
UBC researchers have discovered a universal electronic state that controls the behavior of high-temperature superconducting copper-oxide ceramics. The work reveals the existence of 'charge-density-waves', which carry the seeds of superconductivity emerging in these materials.
Researchers have developed a nano-SQUID-on-tip that measures magnetic fields at distances as small as a few nanometers from the sample, breaking the record for sensitivity and resolution. This tiny device may also enable measuring the magnetic field from the spin of a single electron, a major breakthrough in magnetic imaging.