Current news

New Publication: Nonlinear Generation, Compression and Spatio-Temporal Analysis of sub-GV/cm-Class Femtosecond Mid-Infrared Transients

Our team has developed a strategic solution for the generation of spectrally tunable femtosecond pulses in the mid-infrared range. We utilize efficient difference-frequency generation in AgGaS2 powered by a regenerative Yb:YAG thin-disk amplifier. This setup is excellent in terms of both energy scalability and spectral tunability. Moreover, it paves the way for achieving peak amplitudes of electric field comparable to those at the intermolecular and atomic level. With the implementation of…

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New group member: Maurus

We are happy to welcome Maurus as a new member of the Bossini group. As part of his bachelor thesis, he will work on the development of different balanced photodetectors to find the optimal configuration for pump-probe experiments on antiferromagnetic materials. The goal is to build a detector that allows the simultaneous measurement of rotational and transmittance changes. This will improve the comparability of rotation and transmission data with the same parameters.

New group member: Fabienne

We are pleased to welcome Fabienne as a new member of the Bossini group. As part of her bachelor thesis, she will assist us in the development of the magneto-optical laser-based microscope that will allow us to measure the propagation of magnons with femtosecond time resolution and (sub)-300 nm spatial resolution.

New publication: The importance of the interface for picosecond spin pumping in antiferromagnet heavy metal heterostructures

Interfaces comprising antiferromagnets and heavy metals are spintronic systems massively investigated in the last few years. Despite the huge amount of work the basic understanding of spin transport phenomena across these interfaces is still in its infancy. In this paper we demonstrate that the magnon density of states of the antiferromagnet plays a key role in the transport through the interfaces. This conclusion was achieved via a quantitative comparison of two different systems, in which…

New publications

The possibility to employ semiconductors in spintronics has long fascinated scientists and engineers, as it would allow to merge the beneficial electronics transport properties of semiconductors with spin manipulations concept. In two papers published back-to-back ([1], [2]) we consider this scenario for MnTe, an antiferromagnetic semiconductor ordered above room temperature. The coupling between spins, lattice and charge dynamics is discussed both theoretically and experimentally. We…

New publication: Ultrafast Amplification and Nonlinear Magnetoelastic Coupling of Coherent Magnon Modes in an Antiferromagnet

The continuously growing demand of data storage and processing in the cloud can be sustained with the presently available technology only for a limited time-window (approximately 10 years). The necessary novel concept must reduce the energy consumption while simultaneously increase the operational speed of the data storage, transfer and processing. Antiferromagnets are the most promising materials for the next-generation information technology devices, since in combination with femtosecond laser…

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New group member: Leon

We are happy to welcome Leon as new group member. As part of his three-month bachelor's thesis, he will develop and characterize a scanning module for the magneto-optical microscope.