Unit

Laboratory for Topological Matter

Laboratory
Summary

The Topological Materials Laboratory at EPFL focuses on studying the influence of topology on electronic structure, magnetic properties, and phase transitions. They investigate various topological insulators, Dirac and Weyl semimetals, skyrmions, transition metal oxides, and multiferroic materials using photon-based spectroscopic techniques like ARPES and RIXS. Special attention is given to reciprocal space spin textures and the ability to actively influence them. Their research on spin-orbit interaction explores novel physical phases, the Rashba effect for spintronics applications, and fundamental properties of matter using SARPES. The lab is at the forefront of developing experimental techniques to enhance research possibilities.

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Related publications (34)

Field-induced ultrafast modulation of Rashba coupling at room temperature in ferroelectric alpha-GeTe(111)

Jan Hugo Dil

Rashba materials have appeared as an ideal playground for spin-to-charge conversion in prototype spintronics devices. Among them, alpha-GeTe(111) is a non-centrosymmetric ferroelectric semiconductor for which a strong spin-orbit interaction gives rise to g ...
NATURE PORTFOLIO2022

Hidden bulk and surface effects in the spin polarization of the nodal-line semimetal ZrSiTe

Marco Grioni, Arnaud Magrez, Oleg Yazyev, Daniel Gosalbez Martinez, Helmuth Berger, Alberto Crepaldi, Mauro Fanciulli, Gianmarco Gatti

Local inversion symmetry breaking in centrosymmetric materials can lead to large spin polarization of the electronic band structure in separate sectors of the unit cell. Here, the authors reveal such hidden spin polarisation in ZrSiTe using spin and angle ...
NATURE RESEARCH2021

Experimental studies of the equilibrium and out-of-equilibrium electronic structure of non-symmorphic topological materials

Gianmarco Gatti

Symmetry and topology are fundamental properties of nature. Mathematics provides us with a general framework to understand these concepts. On one side, symmetry describes the invariance properties of an object for specific transformations. On the other sid ...
EPFL2020
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