Articles tagged with Superconductors
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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 NIST have discovered that magnetism plays a crucial role in governing the physical properties of iron pnictides, allowing them to superconduct at high temperatures. The team's findings provide strong evidence for the importance of magnetism in understanding iron-based superconductivity.
Scientists have developed a new material from carbon60 that can transmit electricity at high temperatures, reducing future energy losses. The discovery could lead to more efficient power transmission and storage, enabling widespread adoption of renewable energy sources.
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.
Researchers propose a theoretical framework to explain the complex quantum behavior of iron pnictides, a class of high-temperature superconductors. The theory predicts specific changes in electron-electron interactions and phase transitions, opening up new avenues for studying quantum criticality.
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.
Researchers find pseudogap co-exists with superconductivity, suggesting it may compete with the phenomenon. This discovery could lead to higher-temperature superconducting materials, bringing practical applications closer.
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 studying a 'striped' material find that it is indeed a superconductor, but only in two dimensions. The material exhibits stronger electron pairing, a necessary condition for superconductivity, at a higher temperature than other compositions.
Scientists at NIST have discovered a new class of iron-based high-temperature superconductors that exhibit unusual behavior under pressure, suggesting a possible alternative mechanism behind superconductivity. The discovery could lead to the development of higher-temperature superconductors with improved properties.
Scientists at Brookhaven National Laboratory use a new imaging method to confirm that electron pairs emerge above the transition temperature before superconductivity sets in. The findings rule out certain explanations for high-Tc superconductivity and lend support to other competing theories.
Ames Laboratory researchers used a brand new instrument to study iron-arsenic compounds, which are part of the 'hottest' new find in superconducting materials research. The findings mark the first research produced with the aid of the new tool and provide insights into the role of lattice vibrations in these new superconductors.
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.
High-temperature superconductors face a quantum 'traffic jam' that overwhelms the interactions needed for them to act as superconductors. The research offers an explanation, pointing towards new materials with stronger electron pairing but less 'traffic-jam' effect.
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.
Scientists at Washington University in St. Louis have detailed the interaction between a superfluid and a superconductor, which could change our understanding of neutron stars' motion. The research reveals exotic behavior at the boundary between type I and type II superconductors, with unexpected effects on magnetic fields.
Researchers Enrique Solano and colleagues have made significant progress in understanding the behavior of qubits. They found that certain quantum leaps are prohibited when a qubit's symmetry is broken, and vice versa.
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 made a breakthrough in understanding how copper-oxide materials become superconductors. By using high magnetic fields, they were able to probe the underlying electronic structure and reveal the location of 'pockets' of doped carriers. This discovery sheds light on the interplay between magnetism and superconductivity.
Scientists have discovered the location of doped hole carriers that aggregate in high-temperature superconductors, advancing understanding of how they form pairs. This finding reveals the interplay between magnetism and superconductivity, suggesting that non-superconducting vortex cores may exhibit collective magnetism.
A team of UBC researchers developed a technique to manipulate the number of electrons on ultra-thin layers of material, enabling systematic studies of high-temperature superconductors. The approach has significant implications for future electronics, including quantum computer chips and fuel cells.
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.
Researchers at Argonne National Laboratory, led by Valerii Vinokur and Tatyana Baturina, have created a new type of insulator called a superinsulator. By cooling the material to near absolute zero, they observed a sudden increase in resistance, opening up new possibilities for microelectronics and energy-efficient devices.
Researchers developed a DNA-guided method for controlling nanoparticle assembly, enabling precise manipulation of materials. Scientists also made progress in understanding the 'pseudogap' phenomenon in high-temperature superconductors, which could lead to improved superconductor design.
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.
A research team led by Andrea D. Bianchi discovered a way to control superconductivity in a material by applying a magnetic field, leading to a better understanding of the phenomenon and potential applications in energy storage and transmission.
The SUPERCABLE project will build a 30m superconductor cable with a current value of 3200 Amperes RMS, transporting the electrical strength of 110 MVA. This technology aims to reduce energy consumption by 10-15% and greenhouse gas emissions.
Researchers at Brown University have made a groundbreaking discovery, finding Cooper pairs in both superconductors and insulators. The team's findings suggest that Cooper pairs behave differently in each material, with some forming solo pairs in insulators that cannot make continuous electric current.
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.
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.
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 found that pressure and oxygen isotopes have a similar effect on electronic properties of high-temperature superconductors, with vibrations in the lattice structure playing a crucial role in their superconductivity. The study reveals new insights into the behavior of these mysterious materials.
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.
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.
A team of researchers has confirmed the existence of a complex order parameter in ruthenate superconductors, which breaks time-reversal symmetry. This discovery was made using the Josephson interferometer technique and provides crucial insights into the microscopic mechanism responsible for superconductivity.
Physicist Andrei Lebed has discovered exotic superconductivity where electron pairs exhibit both rotating and non-rotating behavior, breaking down conventional symmetry laws. This phenomenon is observed in strong magnetic fields and has significant implications for our understanding of quantum mechanics.
Researchers at Cornell University found that the distribution of paired electrons in a common high-temperature superconductor was disorderly, but the distribution of phonons was also disorderly. This suggests that a similar mechanism may be responsible for high-temperature superconductivity.
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.
Physicists verify Chandra Varma's microscopic theory of high-temperature superconductivity using neutron scattering experiments. The results suggest ways to fabricate room temperature superconductors and shed light on a major mystery in physics.
Duke University researchers propose a new 'metal sandwich' alloy that could be superconductive at a higher temperature than current materials. Lithium monoboride, a binary alloy of boron and lithium, may have the potential to break the record for highest superconducting temperature.
Researchers observed anomalous signatures in lattice vibrations, suggesting dynamic stripes are present in copper-oxide superconductors. The findings support earlier controversial claims and may help explain the superconducting mechanism.
Researchers have discovered a material that exhibits similar energy scales and gaps to high-temperature superconductors despite being a non-superconductor. The finding is a new wrinkle in the ongoing quest to understand the mechanism of electron pairing, which remains a key mystery.
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 have developed a method to estimate oxygen levels in grain boundaries of superconductors, which can enhance their critical current density. This technique, called pressure-induced oxygen relaxation, could make it easier to manufacture reliable ceramic superconductors.
Scientists have confirmed a long-standing mystery in high-temperature superconductors: lightly doped Mott insulators remain insulators. Strong electron interaction is the key to understanding this phenomenon. The research was funded by the National Science Foundation.
Pitt researchers Yadin Y. Goldschmidt and Eduardo Cuansing used computer simulations to find direct evidence of new vortex patterns in superconductors. These findings show that the vortices can behave differently in the presence of columnar defects, leading to two-stage melting instead of one at higher temperatures.
Researchers found that a nanoscale corrugated surface increases YBCO films' current-carrying capacity by over 30%. This suggests that some degree of substrate roughness might improve high-temperature superconductor performance.
Researchers at Cornell University have made a breakthrough in understanding superconductors by locating crucial atoms that increase conductivity but decrease it in localized spots. This discovery could lead to the development of more effective superconductors and unlock new materials for various applications.
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 used point-contact spectroscopy to explore Andreev reflection between a normal metal and a heavy-fermion superconductor. The findings show that conventional theories cannot account for the data, indicating the need for new theoretical frameworks.
Researchers find high-temperature superconductors break Pauli principle due to linked high- and low-energy scales. Strong electron interactions cause mixing of energy levels, affecting renormalization and spectral features.
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.
Researchers have confirmed the existence of an odd-parity superconductor, a new electronic state in materials that can carry electric current without resistance. The strontium ruthenate Sr2RuO4 SQUID experiment provides direct evidence for this previously theorized but never demonstrated state.
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.