The interest of this thesis lies in spin transport in normal metals and superconducting half-metallic junctions.

Promotor: J. Aarts

This thesis consists of two subjects, that are both a consequence of radiation pressure.

Promotor: Prof.dr. C.W.J. Beenakker

Promotores: Prof.dr. D. Bouwmeester, Prof.dr. A. Fiore (TU Eindhoven)

In the Aarts lab we combine or structure materials, mostly in thin film form, in such a way that the hybrid has different and novel properties or functionalities.

Promotores: Prof.dr. J. Zaanen & Prof.dr. K.E. Schalm

CrO2, a half-metal ferromagnet, has shown great promise for superconducting spintronics applications for nearly two decades.

This thesis is devoted to an in-depth examination of the various effects of disorder in the cuprate high-temperature superconductors.

Nature publishes an article on a paradoxical discovery in superconductivity. Physicists are searching for superconductivity at high temperatures so that less cooling is needed in for example MRI machines. News & Views article by Prof. Jan Zaanen in the same issue of August 19th.

If computers work on superconducting current, they won’t consume any energy. Leiden physicists have now gained control over a new type of superconducting memory elements. Publication in Nature Communications.

Promotor: C.W.J. Beenakker, Co-Promotor: A.R. Akhmerov

In unconventional high temperature superconductors, supercurrent vortices are known to spoil the Landau levels. In this thesis the emergence of Landau levels is studied in different types of superconductors: Weyl superconductors, and the Fu-Kane heterostructure.

Route descriptions to CML by public transport or car

Here we explain how to attend the workshop "How to Get a PhD Position" on May 7 2021.

Triplet superconductivity refers to a condensate of equal-spin Cooper pairs (pairs of electrons with equal spin).

We find ourselves in an era of transition, not just towards a more computing- and data-driven society but also away from unsustainable fossil fuels as an energy source.

Superconducting devices such as SQUIDS (Superconducting Quantum Interferometry Device) can perform ultra-sensitive measurements of magnetic fields. Leiden physicsts invented a method to 3D-print these and other superconducting devices in minutes.

This thesis presents insights from our study of various correlated electron systems with a scanning tunneling microscope (STM). In ordinary metals, electron-electron interactions exist, but get substantially screened due to the sheer number of electrons.

Unconventional superconductors form one of the big mysteries in physics. Among them is strontium ruthenate, which stands out as a controversial superconductor. During his PhD, Leiden physicist Kaveh Lahabi has provided new insights into the nature of superconductivity in this material, leading to a…

In this thesis we use Josephson and noise scanning tunneling microscopy for the study of conventional, unconventional (iron-based) and disordered superconductors. On the one hand, Josephson scanning tunneling microscopy allows us to directly visualize the superfluid density with high spatial resolut…

The behaviour of strongly correlated electron systems, such as high-temperature superconductors, defies explanation in the language of ordinary quantum theory. A seemingly unrelated area of physics, string theory, might give physicists a better understanding of the weird behaviour of these kinds of…

Since 2015 the United Nations have declared 11 February the International Day of Women and Girls in Science. Leiden University organized a public event for over a hundred visitors. In between a lecture on the building blocks of life and a talkshow on the impact of science on society, high school students…

Koen Bastiaans and his colleagues discovered a new quantum liquid unlike anything ever seen. They did it by using a technique that can be compared to listening to the sound of raindrops falling on a roof. Publication in Science 29 October.

Experimental physicist Jan Aarts has received a FOM Projectruimte grant of 545,000 euro. He will use the budget to study the interaction between superconducting currents and ferromagnetism. In the future, this might lead to computer memory with negligible energy consumption.

In this thesis, we study systems of electrons in which strong correlations give rise to emergent exotic physics.

Promotor: E.R. Eliel, Co-Promotor: M.J.A. de Dood

In their quest for materials that conduct electricity without resistance at moderate temperatures, scientists usually work on their chemical make-up. Now Leiden physicists have come up with a radically new approach: pinching holes in a periodic pattern. Publication in SciPost.

How to get a PhD position is clouded in mystery. In one afternoon, Peter van der Putten and Maarten Lamers talk about how (they think) the game is played.

How to get a PhD position is clouded in mystery. In one morning, Peter van der Putten and Maarten Lamers talk about how (they think) the game is played.

Become involved with LUGO! Become part of the team, join forces with fellow committee members in our voluntary committee or take part in our project-based internships! Check this page regularly for open positions.

On this page you will find the most important issues that you as a student of Leiden University will have to deal with.

The WIIS network is about the advancement of women's leadership. To best accomplish our mission, we need subscribers like you. As a dues-paying subscribers of Women In International Security (WIIS), you will have the ability to contribute to the WIIS Blog, receive WIIS this Week, access and post to…

Research groups in the Quantum Matter & Optics programme investigate electronic properties of matter and light-matter interactions with emphasis on quantum information.

At LUC we are very excited for your arrival this August, and are eagerly preparing everything for your move-in day and a fantastic introduction week. This site will give you all the information you need about the introduction week, as well as the practical information you need before moving to The…

How to get a PhD position is clouded in mystery. In one afternoon, Peter van der Putten and Maarten Lamers talk about how (they think) the game is played.

Electrons that spin synchronously around their axis, turn out to stay superconducting across large distances within magnetic chromium dioxide. Electric current from these electrons can flip small magnets, and its superconducting version could form the basis for a hard drive without energy loss. Publication…

Physics professor Jan Aarts starts a collaboration with chip manufacturer Intel to perform fundamental research in low-power, cryogenic computing.

Many people across Leiden University are connected with Academia in Motion.

For the first time, physicists have visualized the ‘melting’ of electrons inside a special class of insulators. It allows electrons to move freely and turns the insulator into a metal and possibly later into a superconductor. Publication in Nature Physics.

Welcome to the Leiden Science community! Throughout the year, our faculty hosts a range of events designed to bring together students and staff. From interesting lectures to lively gatherings and ceremonial milestones, there’s always something happening for you. Explore the upcoming events and make…

STM scanning experiments on poorly conducting materials are challenging, and can cause a distortion effect. A new model corrects for this effect, allowing physicists to better study materials in their quest to understand unconventional superconductivity. Publication in Physical Review B as Editor’s…

Meet the students behind Science for Sustainable Societies! In this section, you will find monthly interviews with the students who are following this programme. They will share what drives them, what they enjoy about their study, their views on our programme and what inspires them about sustainability.…

Meet the people behind Science for Sustainable Societies! As a small-scale and hands-on bachelor’s programme, our team plays a big role in shaping your learning experience. In this section, you will find monthly interviews with the people who make this programme happen: our teachers, researchers, and…

Do you want to contribute to future proof health and care? Our healthcare faces major challenges such as staff shortages, ageing and increasing costs. During the two-year master programme Population Health Management you will become equipped to tackle these challenges to improve health. Knowledge from…

Do you want to contribute to future proof health and care? Our healthcare faces major challenges such as staff shortages, ageing and increasing costs. During the two-year master programme Population Health Management you will become equipped to tackle these challenges to improve health. Knowledge from…