Articles tagged with Superconductivity
Researchers have confirmed the prediction of superconductivity in a new class of materials called superhydrides at high pressures, approaching room temperature. This breakthrough could lead to lower resistance transmitter and reduce energy loss in power lines.
Researchers found that light pulses can induce eta pairing in Mott insulators, turning them into superconductors. This unconventional type of conductivity arises from repulsive interactions between electrons and is believed to take place under non-equilibrium conditions.
Researchers confirm existence of 'quantum critical point' at high temperatures, believed to be the moment when superconductivity occurs. The discovery is a significant step towards understanding and creating room-temperature superconductors.
Physicist Zhifeng Ren, director of the Texas Center for Superconductivity at the University of Houston, has received a research award from the Alexander von Humboldt Foundation to collaborate with German researchers. He will focus on new fabrication techniques and thermoelectric materials to improve clean energy conversion.
Researchers have identified a flat band area in graphene that is a prerequisite for superconductivity, but requires further assistance to achieve. The discovery uses high-resolution angle-resolved photoemission spectroscopy (ARPES) and could lead to controlled band structure manipulation.
Louis Taillefer is recognized for seminal magneto-transport studies on heavy-fermion and cuprate superconductors, advancing understanding of superconductivity and its potential for room-temperature applications.
A study by the Solid State Physics Group at São Paulo State University found that certain materials exhibit exotic behaviors, including a
Researchers successfully synthesized a purely honeycomb borophene sheet on an Al(1 1 1) surface, exhibiting a planar, non-buckled honeycomb lattice similar to graphene. Theoretical calculations show that the structure is energetically stable and could enable superconductivity.
Researchers at Ames Laboratory have discovered a metallic material, CaCo1.86As2, with a perfectly frustrated magnetic state that persists even at low temperatures. This finding offers a new pathway for studying frustrated magnets and their potential applications in quantum computing and high-temperature superconductivity.
A group of TIFR scientists have discovered superconductivity in pure Bismuth crystal at an extremely low temperature of 0.00053 K. The discovery cannot be explained by standard models of superconductivity, highlighting the need for a new theory.
Physicists adapt BCS theory to externally drive phonon interaction, elevating critical temperature and creating higher-temperature superconductors. Theoretical approach reveals controlled elevation of critical temperature through time-averaging procedure.
Researchers at Ames Laboratory have found a charge density wave in purple bronze that could enable new high-temperature superconducting materials. The unusual phenomenon has been observed at temperatures as high as 220K and is accompanied by significant increases in the energy gap.
Scientists have discovered a new approach to tailor interface properties of metal oxide sandwiches, allowing for the control of ferromagnetism and superconductivity. The team found that the charge transfer between materials strongly depends on the rare earth element used, enabling the manipulation of interfacial phases.
Physicists have discovered that nuclear effects help bring about superconductivity in YRS, a composite material of ytterbium and rare earth elements. This finding provides further evidence that unconventional superconductivity arises from quantum criticality and exposes the role of nuclear spins in exposing electronic quantum criticality.
Researchers found a new type of multipolar order in strontium-iridium oxide, which could lead to breakthroughs in electronic device functionalities and high-temperature superconductivity. The discovery was made using an optical harmonic generation technique that exploits changes in crystal symmetry.
Researchers use precision spectroscopic-imaging scanning tunneling microscope to map out defects, superconductivity, and quantum vortices. Vortex pinning depends on shape of damage tracks and collateral damage, enabling strategic engineering of materials for energy applications.
Researchers observed the Hall Effect in frustrated magnets at extremely low temperatures, challenging previous theories. The discovery may pave the way for new electronics and innovations in computing.
Researchers at CIFAR discover that charge ordering creates a stripy pattern, not a checkerboard, and competes with superconductivity along one direction. This discovery sheds light on the role of charge ordering in propelling electrons into tight pairs, allowing for free movement.
Researchers at USC found that aluminum 'superatoms' exhibit superconductivity at temperatures around 100 Kelvin, a significant increase from bulk aluminum metal. This discovery raises the possibility of creating ultraefficient electronic devices, such as laptops and power grids, with minimal energy loss.
Charge ordering, a phenomenon that interferes with superconductivity, has been detected in electron-doped copper-oxide crystals for the first time. The discovery contradicts existing research suggesting charge ordering only occurs during the pseudogap phase. This finding opens new possibilities for understanding the problem and could p...
Researchers have observed electrons splitting into a magnet and an electrical charge in quasi two-dimensional magnetic materials, supporting the theory of high-temperature superconductivity. This phenomenon was previously thought to occur only in one dimension.
University of Houston faculty members Allan Jacobson and Richard Willson have been named fellows of the National Academy of Inventors for their work on lithium batteries, catalysts, and nanotechnology. They are recognized for their innovations in areas such as patents and licensing, innovative discovery, and significant impact on society.
Scientists from Brookhaven Lab and Stony Brook University explored quantum fluctuations behind a novel magnetic material's ultra-cold ferromagnetic phase transition. They measured the electronic, magnetic, and thermodynamic performance of metallic materials at near absolute zero temperatures.
Scientists have designed a new material that could enable superconductivity at temperatures rivaling those seen in cuprates, potentially paving the way for more practical applications. The proposed design features layers of semiconductor compounds separated by insulator spacers, which would create indirect excitons that become superflu...
Researchers induce pseudogap state in material and subject it to laser pulses, inducing a temporary metallic state. The study provides new insight into superconductors and offers the possibility of controlling their characteristics through laser light.
Researchers at Boston College manipulate a compound of strontium, iridium and oxygen into the metallic regime by substituting ruthenium metal ions. Scanning tunneling microscopy reveals the emergence of charge carriers, forming minute metallic puddles that coalesce to form a metal across which charges freely flow.
Scientists have found that charge-density waves destroy superconductivity at a maximum of minus 135 degrees Celsius. To develop high-temperature superconductors, researchers must search for substances not subject to these periodic fluctuations.
Zhifeng Ren, a University of Houston physicist, has been honored with the Edith and Peter O'Donnell Award in Science from The Academy of Medicine, Engineering & Science of Texas. He is recognized for his seminal contributions to carbon nanotubes, thermoelectrics, hierarchical zinc oxide nanowires, high temperature superconductivity, an...
Physicist Zhifeng Ren has been recognized for his groundbreaking contributions to five scientific fields: carbon nanotubes, thermoelectrics, hierarchical zinc oxide nanowires, high temperature superconductivity, and molecule delivery/sensing. His work on waste heat recovery and immunosuppressant medication detection has shown significa...
Researchers used X-rays to study atomic vibrations in high-temperature superconductors, finding a giant resonance that contradicts the electron-phonon coupling mechanism. This discovery highlights the need for new scenarios to explain high-temperature superconductivity.
Scientists have successfully manipulated atomic magnetism by harnessing superconductivity to create a stable state, enabling the potential for quantum computing. By studying tiny magnetic molecules in contact with a superconductor surface, researchers were able to write and read information using controlled magnetism.
Washington State University researchers discovered a 400-fold increase in electrical conductivity of strontium titanate when exposed to light. This phenomenon, known as persistent photoconductivity, could lead to significant improvements in electronic device performance and capacity, especially with the development of holographic memory.
Researchers propose a set of key principles for understanding high-Tc superconductivity, which applies to all families of materials. Antiferromagnetic electron interactions drive both superconductivity and intertwined electronic phases across different material types.
A team of researchers has carried out the first detailed measurements of a unique kind of magnetism found in herbertsmithite. The study reveals a signature in the material's optical conductivity that supports theoretical predictions about the influence of magnetism on electrons.
Scientists at Brookhaven National Laboratory identified a signature to look for in superconductors, suggesting that fluctuating charge stripes may play a role. The researchers used neutrons to analyze the material's electronic structure and found that the displacements from average structure persisted with increasing temperature.
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.
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.
Substituting impure atoms into a heavy-fermion system destroys its superconductivity by creating 'Kondo holes' that disrupt electron interactions. Visualization techniques reveal widespread disruption and the spread of disturbance through the material.
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 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.
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.
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.
Scientists at Carnegie Institution create novel 'compound' from pure boron, exhibiting low mass, high strength, and response to neutron irradiation. The discovery builds on previous superconductivity findings in boron and paves the way for understanding its transition to superconductivity under pressure.
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.
Physicists from Rice and Rutgers universities have published a new theory explaining the complex electronic and magnetic properties of iron pnictides. The research suggests that pnictides exhibit magnetic frustration, which enhances magnetic quantum fluctuations and may be responsible for high-temperature superconductivity.
Physicists at University of Illinois discover a new fundamental particle, boson, that arises from strong electron interactions and explains the puzzling behavior of high-temperature superconductors. The particle has a charge of 2e but is not composed of two electrons.
Researchers have made a major breakthrough in understanding the unconventional superconductor URu2Si2 by studying its electron movements using neutron probes. The study reveals that the wandering particles work out an unexpected accommodation in the spacing of their energy levels, leading to a more orderly and cooperative behavior.
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.
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 have made significant progress in understanding the behavior of materials at quantum critical points, a stage where materials change phases. The new classification system has shed light on the relationship between quantum criticality and high-temperature superconductivity.
Scientists have observed eight-fold configuration of quasiparticle interference in a high-Tc superconductor, predicting a peculiar electronic state known as the 'stripe phase.' This discovery calls into question the necessity of stripes for superconductivity in high-temperature materials.
Researchers used two techniques to examine the electronic structure of magnesium diboride, revealing interactions between electron holes that contribute to its superconductivity. The findings provide new insight into the material's properties and may lead to improved magnetic resonance imaging and electric power transmission.