Category archives: DIPC Advanced materials

New physics: the anomalous high-temperature superconductivity of yttrium hydride

New physics: the anomalous high-temperature superconductivity of yttrium hydride

DIPC Advanced materials

By DIPC

The standard explanation of superconductivity goes more or less like this. Electrical resistance is due to collisions of the electrons (whether treated as particles or waves) with impurities, imperfections, and especially the lattice vibrations of the metal crystal. The lattice vibrations of the solid will decrease as the temperature falls, because the entropy, which represents […]

Topological longitudinal circular photogalvanic effect in a chiral semimetal

Topological longitudinal circular photogalvanic effect in a chiral semimetal

DIPC Advanced materialsDIPC Electronic Properties

By DIPC

The absence of mirror symmetry, or chirality, is behind striking natural phenomena found in systems as diverse as DNA and crystalline solids. A remarkable example occurs when chiral semimetals with topologically protected band degeneracies are illuminated with circularly polarized light. In circularly polarized light, the tip of the electric vector describes a circular helix about […]

Hybrid 2D materials as a novel platform for tunable superconductivity

Hybrid 2D materials as a novel platform for tunable superconductivity

DIPC Advanced materials

By DIPC

Transition metal dichalcogenides (TMDs) are layered compounds which can be thinned down to the single-layer limit.1,2 While mechanical exfoliation generates atomically thin TMD flakes possessing an area of a few square microns, chemical and physical methods provide high-quality monolayers on large-area substrates, which are suitable for actual technological applications. Similar to other two-dimensional materials, TMD […]

Largest unsubstituted starphene to date

Largest unsubstituted starphene to date

DIPC Advanced materialsDIPC Computational and Theoretical Chemistry

By DIPC

Acenes are the class of organic compounds made up of linearly fused benzene rings. The best known of acenes is the compound with three rings, anthracene. The larger representatives, like pentacene (the one with five rings) have potential interest in optoelectronic applications and are actively researched in chemistry and electrical engineering. Starphenes are 2D polyaromatic […]

The critical role of van der Waals interactions in the melting of the charge density wave phase in VSe<sub>2</2>

The critical role of van der Waals interactions in the melting of the charge density wave phase in VSe2

DIPC Advanced materialsDIPC Electronic PropertiesDIPC Quantum Systems

By DIPC

Charge density wave (CDW) is a many-body state of matter in which both lattice and electron density are modulated by a new periodicity. CDW features discrete translational symmetry-breaking, and mostly occurs in low-dimensional materials. Although CDW behaviours have been found in many materials, the underlying mechanism and the driving forces of CDW transition are still […]

A 3D metal-organic framework as ideal electron spin filter

A 3D metal-organic framework as ideal electron spin filter

DIPC Advanced materialsDIPC Electronic Properties

By DIPC

During the last decades, the electronics industry has been very successful in pushing forward the advancement of electronic building blocks, but the limit of silicon-based electronic devices especially in terms of miniaturization are almost reached. There are many ideas how to overcome this problem, for example, by adding functionality based on approaches originating from molecular […]

An exotic magnetic topological heterostructure

An exotic magnetic topological heterostructure

Condensed matterDIPC Advanced materialsDIPC Electronic PropertiesMaterials

By DIPC

Topological insulators are electronic materials that have a bulk band gap like an ordinary insulator but have conducting states on their edge or surface. The conducting surface is not what makes topological insulators unique, but the fact that it is protected due to the combination of spin-orbit interactions and time-reversal symmetry. Inducing magnetism in topological […]

Magnetism in graphene nanoribbons induced by a pair of boron atoms

Magnetism in graphene nanoribbons induced by a pair of boron atoms

Condensed matterDIPC Advanced materialsDIPC Electronic PropertiesMaterials

By DIPC

Graphene nanoribbons (GNRs), are strips of graphene with ultra-thin width (<50 nm). Graphene ribbons, introduced as a theoretical model by Mitsutaka Fujita and coauthors to examine the edge and nanoscale size effect in graphene, have emerged as a promising material for nano electronics, as they combine many of the extraordinary properties of graphene with a […]

Magnetic Topological Quantum Chemistry, <i>ab initio</i> calculations included

Magnetic Topological Quantum Chemistry, ab initio calculations included

Condensed matterDIPC Advanced materialsMaterialsQuantum physics

By DIPC

Topological materials have special universal properties, which are protected against perturbations. Such properties are theoretically described by topology, a branch of mathematics concerned with the properties of geometrical objects that are unchanged by continuous deformations. Topological materials behave like an ordinary insulator in the bulk but have conducting states on their boundaries, i.e., edges or […]