Topology and correlated Mott state on the Kagome lattice of Nb3Cl8

Nb3Cl8 lattice

A new class of layered materials was recently proposed to harbor a special electronic structure where topology and correlation effects mix. Very recent theoretical work shows that this special material may harbor a correlated Mott state [1]. The race is on to further investigate its properties and to test whether these materials can be changed … Read more

BSc/MSc project – Pressure-dependent optical measurements to probe bandgap shifts in 2D perovskites (joint with AMOLF)

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Layered 2D hybrid perovskites are composed of organic spacer layers connecting adjacent perovskite slabs made of octahedra, where a monovalent MI (1+) and a trivalent MIII (3+) cation coordinate six halides and are ordered in an alternating fashion. These materials have attracted considerable interest due to their unique optoelectronic properties and highly modular structure that can be … Read more

BSc/MSc project – Strain-Dependent Photoluminescence in Layered Double Perovskites

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Layered 2D hybrid perovskites are composed of organic spacer layers connecting adjacent perovskite slabs made of octahedra, where a monovalent MI (1+) and a trivalent MIII (3+) cation coordinate six halides and are ordered in an alternating fashion. These materials have attracted considerable interest due to their unique optoelectronic properties and highly modular structure that can be … Read more

BSc project – Predicting Metal Ions to Form Novel Double Perovskites

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 The photovoltaic performance of halide double perovskites (see picture) has been limited due to the large and/or indirect bandgap of the presently known materials. However, their applications extend beyond outdoor photovoltaics, as halide double perovskites exhibit properties suitable for memory devices, indoor photovoltaics, X-ray detectors, light-emitting diodes, temperature and humidity sensors, photocatalysts, and many more. … Read more

Attosecond X-rays eyes: High-harmonic generation and EUV science

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The High-Harmonic Generation and EUV Science group at ARCNL investigates attosecond X-rays by high-harmonic generation (HHG) in gases and solids to: – Understand and enhance HHG efficiency. – Develop ultrafast nanoscale metrology tools.   We have several internships for M.Sc. and B.Sc. projects available. Interested? Contact group leader Peter Kraus (kraus@arcnl.nl). Website URL: https://arcnl.nl/research-groups/high-harmonic-generation-and-euv-science/ Email … Read more

Classical Analogues to Altermagnets

Classical Analogues to Altermagnets

Altermagnetism has recently emerged as a generalized form of magnetism beyond the classical ferromagnets and antiferromagnets. Altermagnets have an additional broken symmetry in comparison to (anti)ferromagnets that give them strange properties. For example, they share some of the properties of the ferromagnets (e.g. the quantum spin-hall effect) yet without a net magnetization. In addition, they … Read more

Noise in non-Reciprocal Patterns

Noise in non-Reciprocal Patterns

In a non-reciprocal interaction, an agent A reacts to an agent B differently to the way agent B reacts to agent A. Non-reciprocal interactions are commonplace in society and complex living systems but have long been overlooked by most physicists because they can only exist in a system out of equilibrium. By introducing non-reciprocal interactions … Read more

PhD Position in Fracture Metamaterials

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Are you enthusiastic about exploring the fascinating interplay between physics and mechanics? Are you interested in real world applications of metamaterials? We are delighted to open a PhD position on the field of fracture metamaterials: the goal is to steer fracture using the internal architecture of metamaterials.   What are you going to do?   … Read more

Superlubric particles for friction and wear reduction

Graphene Layers for friction reduction (artist's impression)

Supervisors: Abhishek Gupta and Peter Schall Friction between moving parts and the associated wear are responsible for about 25% of the world’s energy consumption. Superlubricity is a new mechanism of ultralow friction between solid surfaces, achieved with 2D materials such as graphene when sliding along incommensurate lattice directions (see image below). In this project, we … Read more