The capacity of creating an electronic bonding network between localized units would be key to enhance the critical temperature in hydrogen-based superconductors, according to recent results. The field of hydrogen-based superconductivity has progressed enormously since 1968, when Ashcroft first proposed that pressurized hydrogen may become a high-temperature superconductor due to the high energy of its […]
When in April 1911 Kamerlingh Onnes and coworkers measured that the electrical resistivity of mercury suddenly vanished at 4.2K, they could not believe it. They repeated the experiment several times looking for a short circuit that could explain the weird observation. But any experimental set up was leading to the same result. They had discovered […]
Condensed matter • DIPC Advanced materials • Materials • Quantum physics
In the layered kagome metal CsV₃Sb₅, researchers have observed something that, until now, seemed almost impossible: robust quantum interference in the normal, non-superconducting state, persisting over distances of several micrometers. The interference is not the fragile single-particle kind seen in ultra-clean semiconductors at millikelvin temperatures. Instead, it behaves as if the entire stack of kagome […]
Imagine electrons as tiny particles zipping through a material, each carrying two key properties: charge, which powers our everyday electronics, and spin, like a little internal compass needle that points up or down. Charge flow is what we call electric current, but spin adds a magnetic twist, opening doors to advanced technologies like more efficient […]
Chemistry • Condensed matter • DIPC Computer Science • DIPC Electronic Properties • Quantum chemistry
Quantum chemistry is a field that dives into the behaviour of atoms and molecules at their most fundamental level, using the principles of quantum mechanics to understand how electrons interact within these systems. For researchers, one of the biggest challenges is studying systems where electrons are strongly correlated—meaning their movements are highly interdependent, like dancers […]
The interplay between the electron and phonon dynamics in 2D materials is a complex and fascinating subject. By examining the behaviour of NbSe₂ on graphene, a new study has provided new insights into how substrates influence superconductivity through moiré phonons. In recent years, the study of two-dimensional (2D) materials has transformed the field of condensed […]
Superconductivity, the phenomenon where electrical current flows without resistance, has long captivated scientists and engineers. This unique state of matter holds promise for revolutionizing technologies, from power grids to magnetic levitation. A recent study delves into the intriguing world of graphene-based superconductors, shedding light on how twisting multiple layers of graphene can influence their superconducting […]
A gauge theory is any number of quantum field theories put forward to explain fundamental interactions. In these theories the interactions between particles can be explained by the exchange of particles such as gluons, photons, and W and Z bosons. A gauge theory involves a symmetry group for the fields and potentials (the gauge group) […]
A diode is an electronic device with two electrodes. In the obsolescent thermionic diode a heated cathode emits electrons, which flow across the intervening vacuum to the anode when a positive potential is applied to it. The device permits flow of current in one direction only as a negative potential applied to the anode repels […]
Topology has been at the forefront of condensed matter physics for the past two decades, influencing our understanding of quantum materials and phenomena. More recently, it has however become clear that a more general concept, that of quantum geometry, manifests itself in a series of quantum phenomena involving flat electronic bands. In condensed matter physics […]