by Dmitry | Apr 30, 2026 | Next Meeting
In this flat club I will first introduce altermagnets, a new class of magnetic systems where opposite spin sublattices are connected by symmetries that enforce a vanishing net magnetization (like in antiferromagnets) but still allow for a finite spin-splitting of...
by Dmitry | Apr 17, 2026 | Past meetings
Controlling how light propagates and is confined on nanometre scales is a central challenge in both fundamental photonics research and the development of nanoscale optical technologies. Strong progress in this area has come from using crystal anisotropy to guide...
by Giulia | Mar 16, 2026 | Past meetings
Anomalous gating effects-such as gate ineffectiveness and pronounced hysteresis-have been observed in graphene-based systems encapsulated in boron nitride (BN) and linked to a possible ferroelectric state. However, their origin, stability, and reproducibility remain...
by Dmitry | Mar 2, 2026 | Past meetings
As predicted by E. Wigner in 1934, the long-range Coulomb interaction between electrons can lead to a phase transition, when the density becomes very low, from a (quantum) liquid or gas phase to a crystallized phase of electrons, now called a Wigner crystal. In three...
by Dmitry | Dec 11, 2025 | Past meetings
Hybridizing superconductivity with the quantum Hall effects has major potential for designing novel circuits capable of inducing and manipulating non-Abelian states. In this talk I will present our recent results on quantum Hall Josephson junctions based on graphene...
by Dmitry | Nov 26, 2025 | Past meetings
Liquids are traditionally described within classical physics, whereas solids require the tools of quantum mechanics. I will discuss how in nanoscale systems, this distinction no longer holds. The dynamics of liquids confined to nanometer-scale channels can couple to...
by Giulia | Nov 11, 2025 | Past meetings
Resonant inelastic x-ray scattering (RIXS) allows to study electronic and magnetic excitations and their momentum and energy dependencies. For example, the absence of dd excitations at the interfaces of KTaO3 films suggests a deficiency of localized Ta 5d electrons...
by Dmitry | Oct 3, 2025 | Past meetings
Understanding and controlling strongly correlated many-body spin systems is one of the key challenges in modern condensed matter physics. Among the most promising experimental platforms for these explorations are semiconducting moiré materials (SMMs), which consist of...
by Dmitry | Sep 23, 2025 | Past meetings
In the Bardeen– Cooper–Schrieffer (BCS) theory, Cooper pairs are formed with zero total momentum, preserving both time and inversion symmetries. A finite momentum Cooper pairing can be induced by the Zeeman effect of magnetic fields, forming the...
by Louk Rademaker | May 15, 2025 | Past meetings
When the period of an incommensurate charge density wave (ICDW) approaches a multiple of a lattice vector, the energy gain from locking the period can drive a transition into an intermediate near-commensurate (NC) state made of locally commensurate regions separated...
