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Scientific Highlights

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Datum
30 November 2020
Magnetic beauty within

Magnetic vortices come full circle

The first experimental observation of three-dimensional magnetic ‘vortex rings’ provides fundamental insight into intricate nanoscale structures inside bulk magnets, and offers fresh perspectives for magnetic devices.

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21 April 2020
Spin wave channels in an artificial spin ice/underlayer hybrid system

Tailoring Spin-Wave Channels in an Artificial Spin Ice

Magnonic crystals are periodic magnetic structures, which are attracting great interest because of their potential use in low-power information technology based on spin waves, or magnons. Artificial spin ices have been recently studied as reconfigurable magnonic crystals, but achieving the required combination of magnetic state reconfigurability and desired magnon dispersions remains challenging. Here, researchers propose a hybrid system that makes use of a magnetic thin film underlayer to couple and strengthen the interaction between the artificial spin ice’s nanoelements though spin waves. Moreover, the magnetic state of the artificial spin ice gives rise to directional spin wave channels in the underlayer. This hybrid system opens a new direction for band structure engineering in reconfigurable magnonic crystals.

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19 March 2020
Domain wall logic gate

Logic operations with domain walls

A collaboration of scientists from the ETH Zürich and the Paul Scherrer Institute successfully demonstrated the all-electric operation of a magnetic domain-wall based NAND logic gate, paving the way towards the development of logic applications beyond the conventional metal-oxide semiconductor technology. The work has been published in the journal Nature.

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18 March 2020
Cover page of the Advanced Materials issue

Optics for spins

In this work, published on the front cover page of Advanced Materials, an international collaboration of Italian, American, and Swiss scientists demonstrated a novel concept for the generation and manipulation of spin waves, paving the way towards the development of magnonic nano-processors.

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17 March 2020
Sketch of a skyrmion synapse

Can skyrmions read?

Can a skyrmion-based device be used to read a handwritten text? In this work, an international scientist collaboration led by the Korea Institute of Technology and the IBM Watson research center could provide a first answer to this question by fabricating a proof-of-principle single-neuron artificial neural network, using X-ray magnetic microscopy at the Swiss Light Source to investigate its performances.

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19 February 2020
Skyrmion Motion vs Nucleation sites

Many skyrmions, one angle

Employing a tailored multilayered magnetic film, optimized for the zero-field stabilization of magnetic skyrmions, researchers have investigated the influence of the skyrmion diameter on its current-induced sideways motion, uncovering mechanisms that allow for this topological property to be controlled.

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27 January 2020
Inner Structure of a Butterfly Wing Scale

Soft X-ray Laminography: 3D imaging with powerful contrast mechanisms

3D imaging using synchrotron radiation is a widely used tool that allows access to the inner structure of complex objects. An international and interdisciplinary consortium of scientists from the Swiss Light Source (PolLux and cSAXs), the Friedrich-Alexander-Universität Erlangen-Nürnberg, and the University of Cambridge developed the new 3D imaging technique of Soft X-ray Laminography (SoXL). SoXL allows for the investigation of thin and extended samples while taking advantage of the characteristic absorption contrast mechanisms in the soft X-ray range, providing 3D information with nm spatial resolution.

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8 January 2020
SNF logo

Wrinkles and wrinklons: magnetic films with tuneable topographies

Sebastian Gliga has been awarded an SNF Spark grant to investigate the possibility of combining magnetic thin films with graphene to create logical devices. As electronic components, such as those found in computer CPUs, are miniaturized, they generate waste heatand alternative schemes are being explored to create novel data processing architectures. This project, to be carried out in the Microspectroscopy group (PSD), aims to exploit the tunable topography of graphene to create magnetic systems, which allow simultaneously guiding spin waves and performing logical operations based on spin wave interference. 

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10 October 2019
Quasi-static XMCD-STXM images of the current-induced nucleation and field-induced deletion of a magnetic skyrmion.

Nano-engineered contact for the zero-field nucleation of magnetic skyrmions

Researchers in a joint collaboration between the PolLux endstation of the Swiss Light Source and the University of Leeds have achieved the reliable and reproducible electrical nucleation of magnetic skyrmions from a nano-engineered point contact structure, investigating the physical mechanisms driving the nucleation process.

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Microspectroscopy Group
Dr. Jörg Raabe
Swiss Light Source
Paul Scherrer Institut
WSLA/006
5232 Villigen – PSI
Switzerland
Telephone:
+41 56 310 5193
E-mail:
joerg.raabe@psi.ch

Dr. Benjamin Watts
Swiss Light Source
Paul Scherrer Institut
WSLA/126
5232 Villigen – PSI
Switzerland
Telephone:
+41 56 310 5516
E-mail:
benjamin.watts@psi.ch

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