Articles tagged with Band Structures
Researchers at Tohoku University have discovered a systematic strategy for designing topological magnets by varying the number of layers in a crystal structure. The new approach, based on homologous series, could lead to new materials with unique magnetic and topological properties for applications in spintronics and quantum technologies.
Researchers from Tokyo Metropolitan University have derived design rules for thermoelectric materials by optimizing band structure, a map showing electron states. This work promises a shift towards rational material design, enabling efficient conversion of waste heat to electricity and reducing oil and gas consumption.
Researchers developed a transistor technology that enables a single device to perform multiple circuit functions simultaneously, simplifying circuit design and increasing data processing speed. The new approach reduces required transistors by 75% and increases data processing speed fourfold.
Researchers at Rice University and the Weizmann Institute have visualized compact molecular orbitals in flat band quantum materials, providing insight into the interplay between topology and correlation physics. The study reveals that these electronic agents underlie the unusual quantum critical behavior in a highly correlated metal.
Researchers from CASUS at HZDR developed a reliable computational framework to study polyheptazine imides' electronic and optical properties. This work confirms the potential of these materials for photocatalytic reactions, including water splitting and carbon dioxide reduction.
Researchers developed a new atomically layered material that reduces resistivity by five orders of magnitude when oxidized, exceeding similar non-layered materials. The team discovered a synergy between oxidation and structural modification driving dramatic changes in physical properties.
Researchers at SUTD have discovered that applying pressure can transform angstrom-thin bismuth into a metallic material, eliminating its energy band gap and allowing electrons to move freely. This discovery enables the creation of layer-selective Ohmic contact, which allows electrical current to be steered between layers on demand.
The team created Pd5AlI2, a metallic material that exhibits frustration of electron motion due to its chemistry, rather than geometry. This discovery opens up new possibilities for flat bands and unique electronic structures that could lead to breakthroughs in quantum technologies like superconductors and rare-earth-free magnets.
Researchers at the University of Michigan discovered a class of materials with exciting properties for transporting photonic information, including unidirectional transport and defect-free light. The topological insulators' band gap size can be up to 100 times larger than current records, enabling new applications in optical devices.
Recent study on 2M-WS2 reveals coexistence of striped surface charge order with superconductivity, modifying spatial distribution of Majorana bound states. Experimental results demonstrate that surface charge order does not destroy bulk topology but can modify MBS positions.
An international team of researchers has synthesized a material hosting a single pair of Weyl fermions, and no irrelevant electronic states. The work enables potential applications in terahertz devices, high-performance sensors, low-power electronics, and novel optoelectronics devices.
Researchers at the University of Minnesota have created a new, transparent conducting oxide material with increased band gap, enabling faster and more efficient devices. This breakthrough supports the development of high-performance electronics for computers, smartphones, and potentially quantum computing.
Scientists have engineered a non-magnetic material called tantalum silicide to achieve efficient spin Hall effect at high temperatures through Berry phase monopole engineering. This breakthrough could lead to the development of ultrafast, low-power and high-temperature spintronic devices.
High-entropy metal telluride superconductors exhibit unique properties due to structural disorder and atomic vibrations. The discovery sheds light on the coupling between electrons and lattice vibrations, potentially leading to exotic superconductivity mechanisms.
Scientists have established a physical model of Berry-curvature-dominated linear positive magnetoresistance (LPMR) in topological materials, providing experimental evidence for the mechanism. The study used cobalt disulfide as a material candidate and proposed temperature-dependent equations that fit previously reported data.
Researchers discovered a novel metallic crystal, Kagome metal, with unusual electronic behavior on its surface. The material's unique atomic structure allows for the manipulation of electrons' spin chirality, which can be controlled by applying a local voltage.
Researchers at the University of Tsukuba have created light-induced topological states in zinc arsenide, exhibiting unusual behavior where electrical currents flow along the surface. This work explores the possibility of creating topological semimetals and manifesting new physical properties by light control.
Scientists have discovered new magnetic interactions in TbMn6Sn6, a Kagome layered topological magnet, which could be used to customize electron flow and reduce energy loss. The material's unique structure and electronic band structure make it an ideal candidate for quantum computing, magnetic storage media, and high-precision sensors.
Researchers constructed a synthetic stub lattice in two coupled rings of different lengths, observing flat bands, band transitions and mode localization. This experimental demonstration enables dynamic control of light and may pave the way for future applications in optical communications.
Researchers studied twisted trilayer graphene, discovering a phase diagram that decouples into product states of graphene and bilayer graphene. The system exhibits unique insulating and semi-metallic phases in the presence of an electric field.
Researchers have confirmed a novel quantum topological material for ultra-low energy electronics, reducing energy consumption by a factor of four. The study reveals the potential of zigzag-Xene-nanoribbons to make topological transistors with robust edge states and low threshold voltage.
Researchers have created and detected dispersing excitons in a metal using angle-resolved photoemission spectroscopy, a breakthrough that could enable efficient data transmission. The discovery of mobile excitons in TaSe3 reveals their mobility and potential to revolutionize electronics.
Researchers have demonstrated a novel topology arising from losses in hybrid light-matter particles, introducing a new avenue to induce topological effects. The study found that the mere presence of loss in an exciton-polariton system causes it to exhibit nontrivial topology.
Researchers from UC Riverside developed a revolutionary imaging technology that compresses light into a nanometer-sized spot, allowing for unprecedented 6-nanometer color imaging of nanomaterials. This advance improves the study of unique properties and potential applications in electronics and other fields.
Scientists fabricate 1D and 2D boron sulfide (BS) nanosheets with unique electronic properties that can be controlled by changing the number of layers. The bandgap energy decreases as more layers are added, making BS a potential n-type semiconductor material.
A graphene-based nanoelectromechanical periodic array has been demonstrated, showing a large number of quasi-continuous resonance modes over a wide tunable frequency range. The device's frequency can be adjusted by applying an electric field to the graphene material.
Researchers at Princeton University observed exotic electronic properties in kagome magnets, including negative magnetism and flat-band electrons. The study used state-of-the-art scanning tunneling microscopy and spectroscopy to explore the behavior of electrons in a kagome-patterned crystal.
A recent high-pressure study on PtTe2 reveals the trivial band structure plays a crucial role in its transport properties. The study observes critical transitions around 20 GPa without lattice phase transitions, and DFT calculations confirm pressure-induced DSM state annihilations at 10 GPa.
Physicists at MIT and Princeton University have developed a new technique to map the energy and momentum of electrons beneath a material's surface. By using momentum and energy resolved tunneling spectroscopy, researchers can visualize the band structure of materials, which determines their electrical and optical properties.
Researchers at the IBS Center for Theoretical Physics of Complex Systems engineered Landau-Zener-Bloch oscillations within a lattice structure, revealing anharmonic properties. The study demonstrates potential for engineering new quantum states and resolving the behavior of Bloch oscillations under external fields.