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Consortium of Swiss Academic Libraries

AUTOMORPHISMS OF CLUSTER ALGEBRAS OF RANK 2

BLANC, JÉRÉMY ; DOLGACHEV, IGOR

In: Transformation Groups, 2015, vol. 20, no. 1, p. 1-20

Université de Fribourg

Biophysics of temporal interference stimulation

Mirzakhalili, Ehsan ; Barra, Beatrice ; Capogrosso, Marco ; Lempka, Scott F.

In: Cell Systems, 2020, vol. 11, no. 6, p. 557-572.e5

Temporal interference (TI) is a non-invasive neurostimulation technique that utilizes high-frequency external electric fields to stimulate deep neuronal structures without affecting superficial, off-target structures. TI represents a potential breakthrough for treating conditions, such as Parkinson’s disease and chronic pain. However, early clinical work on TI stimulation was met with mixed...

Université de Fribourg

High-harmonic generation in spin-orbit coupled systems

Lysne, Markus ; Murakami, Yuta ; Schüler, Michael ; Werner, Philipp

In: Physical Review B, 2020, vol. 102, no. 8, p. 081121

We study high-harmonic generation in two-dimensional electron systems with Rashba and Dresselhaus spin-orbit coupling and derive harmonic generation selection rules with the help of group theory. Based on the band structures of these minimal models and explicit simulations we reveal how the spin-orbit parameters control the cutoff energy in the high-harmonic spectrum. We also show that the...

Université de Fribourg

The transcription factor Spt4-Spt5 complex regulates the expression of ATG8 and ATG41

Wen, Xin ; Gatica, Damián ; Yin, Zhangyuan ; Hu, Zehan ; Dengjel, Jörn ; Klionsky, Daniel J.

In: Autophagy, 2019, vol. 0, no. 0, p. 1–14

Macroautophagy/autophagy, a highly conserved dynamic process, is one of the major degradative pathways in cells. So far, over 40 autophagy-related (ATG) genes have been identified in Saccharomyces cerevisiae, most of which have homologs in more complex eukaryotes. Autophagy plays a crucial role in cell survival and maintenance, and its dysfunction is related to various diseases, indicating...

Université de Fribourg

Terahertz vortex beam as a spectroscopic probe of magnetic excitations

Sirenko, Andrei A. ; Maršík, Premysl ; Bernhard, Christian ; Stanislavchuk, T. N. ; Kiryukhin, V. ; Cheong, S.-W.

In: Physical Review Letters, 2019, vol. 122, no. 23, p. 237401

Circularly polarized light with spin angular momentum is one of the most valuable probes of magnetism. We demonstrate that light beams with orbital angular momentum (OAM), or vortex beams, can also couple to magnetism exhibiting dichroisms in a magnetized medium. Resonant optical absorption in a ferrimagnetic crystal depends strongly on both the handedness of the vortex and the direction of...