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

Level, Bargelaan 180, 2333 CW, Leiden

Oort, Niels Bohrweg 2, 2333 CA, Leiden

Sylvius, Sylviusweg 72, 2333 BE, Leiden

Reuvens, Reuvensplaats 2-4, 2311 BE, Leiden

Gorlaeus Building, Einsteinweg 55, 2333 CC, Leiden

Snellius, Niels Bohrweg 1, 2333 CA, Leiden

Reuvens, Reuvensplaats 2-4, 2311 BE, Leiden

Plexus Student Centre, Kaiserstraat 25, 2311 GN, Leiden

Arsenaal, Arsenaalstraat 1, 2311 CT, Leiden

Wijnhaven, Turfmarkt 99, 2511 DP, The Hague

Kamerlingh Onnes Building, Steenschuur 25, 2311 ES, Leiden

Lipsius, Cleveringaplaats 1, 2311 BD, Leiden

Academy Building, Rapenburg 73, 2311 GJ, Leiden

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

Oude UB, Rapenburg 70, 2311 EZ, Leiden

Herta Mohr, Witte Singel 27A, 2311 BG, Leiden

LUMC Research Building, Einthovenweg 20, 2333 ZC, Leiden

Willem Einthoven, Kolffpad 1, 2333 BN, Leiden

Matthias de Vrieshof, Matthias de Vrieshof 1-4, 2311 BZ, Leiden

LUMC Education Building, Hippocratespad 21, 2333 ZD, Leiden

Anna van Buerenplein, Anna van Buerenplein 301, 2595 DG, The Hague

Johan Huizinga, Doelensteeg 16, 2311 VL, Leiden

Beehive Student Centre, Turfmarkt 104, 2511 DC, The Hague

Old Observatory, Sterrenwachtlaan 11, 2311 GW, Leiden

P.J. Veth, Nonnensteeg 1-3, 2311 VJ, Leiden

Van Steenis, Einsteinweg 2, 2333 CC, Leiden

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.

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

, , ,

Pieter de la Court, Wassenaarseweg 52, 2333 AK, Leiden

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.

Leiden physicists and international colleagues from Geneva and Barcelona have confirmed the mechanism that makes magic-angle graphene superconducting. This is a key step in elucidating high-temperature superconductivity, a decades-old mystery central to physics, which may lead to technological break…

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.

Measurements on a superconducting material show an abrupt transition between a normal metal and a 'strange' metal. The really strange thing, however, is that this abruptness disappears when the temperature falls. 'We don't have any theoretical machinery for this', says theoretical physicist Jan Zaanen,…

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

Physicist Milan Allan will build an instrument that will bring superconductivity research further. He has been awarded an ERC Consolidator Grant of 2 million euros over the next five years. With his PairNoise programme he aims to detect paired electrons as they occur just above the temperature at which…

Majorana meets a mermaid

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.

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.

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…

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.