News ‒ QMAT ‐ EPFL

Quasi-symmetry-protected topology in a semi-metal

Published:17.05.2022
These results demonstrate a class of topological materials with increased resilience to perturbations such as strain-induced crystalline symmetry breaking, which may lead to robust topological applications as well as unexpected topology beyond the usual space group classifications.

Controlling superconductivity of CeIrIn₅ microstructures by substrate selection

Published:12.05.2022
Controlling superconductivity of CeIrIn₅ microstructures by substrate selection

Directional ballistic transport in the two-dimensional metal PdCoO₂

Published:10.05.2022
Here we show how a strongly facetted Fermi surface and the long quasiparticle mean free path present in microstructures of PdCoO2 yield an in-plane resistivity anisotropy that is forbidden by symmetry on an infinite hexagonal lattice.

Congratulations to Xiangwei Huang for successfully passing his oral exam!

Published:14.04.2022
QMAT PhD student, Xiangwei Huang, defended his thesis on “Anisotropic and nonlinear transport in microstructured 3D topological semimetals” in front of his Jury committee.

Mesoscopic finite-size effects of unconventional electron transport in PdCoO₂

Published:14.04.2022
Mesoscopic finite-size effects of unconventional electron transport in PdCoO₂

Non-linear Shubnikov-de Haas oscillations in the self-heating regime

Published:30.11.2021
We demonstrate a non-linear measurement scheme of the Shubnikov–de Haas effect based on Joule self-heating that builds on ideas of the 3 omega method used in thin films.

Unidirectional Kondo scattering in layered NbS₂

Published:23.11.2021
Our results demonstrate the unique and highly anisotropic response of a spontaneously formed Kondo-lattice heterostructure, intercalated in a layered conductor.

Bending strain in 3D topological semi-metals

Published:17.11.2021
Bending strain in 3D topological semi-metals

Temperature dependence of quantum oscillations from non-parabolic dispersions

Published:11.11.2021
Temperature dependence of quantum oscillations from non-parabolic dispersions

2021 EuFN/Fit4Nano Workshop

Published:01.10.2021
2021 European FIB Network and Fit4Nano Workshop in Vienna

Sondheimer oscillations as a probe of non-ohmic flow in WP₂ crystals

Published:13.08.2021
Sondheimer oscillations as a quantitative probe of l_MR in micro-devices.

New Director of MPSD

Published:01.08.2021
Philip Moll Joins the Max Planck Institute for Structure and Dynamics of Matter as New Director.

Long-Anticipated Celebration

Published:17.07.2021
As restrictions ease and new members join the group, QMAT gathered to celebrate over dinner.

Crystal Structures of AlCr₂ and MoSi₂: Same Structure Type vs Different Bonding Pattern

Published:15.05.2021
In a joint effort utilizing modified sample preparation, microscopy, X‐ray diffraction and micro‐fabrication, it became possible to prepare single crystals of the “hidden” phase AlCr₂.

Congrats to Maja Bachmann for Winning the Otto-Hahn Medal

Published:01.05.2021
Maja Bachmann was awarded the Otto Hahn medal.

Welcome to QMAT Josh!

Published:17.02.2021
QMAT welcomes Dr. Josh Straquadine to the group as the newest post-doc!

Scale-invariant magnetic anisotropy in RuCl₃ at high magnetic fields

Published:08.10.2020
Scale-invariant magnetic anisotropy in RuCl₃ at high magnetic fields

Goodbye and Hello

Published:28.09.2020
Chrystelle Demierre moves to a new position at EPFL while Corrine Farquharson-Grandjean joins as the new administrative assistant.

New IMX Students Tour QMAT

Published:11.09.2020
New masters students visit the lab.

Even Colder

Published:20.07.2020
A new dilution refrigerator is installed.

h/e oscillations in interlayer transport of delafossites

Published:12.06.2020
New Science paper reporting on extraordinary single-particle quantum coherence lengths in delafossites.

QMAT Runs Remotely

Published:23.03.2020
We encourage everyone to social distance and stay safe at this time.

Welcome to QMAT Mathieu!

Published:09.03.2020
QMAT welcomes new student.

Magnetic electron collimation in three-dimensional semi-metals.

Published:18.02.2020
New npj Quantum Materials paper published on using magnetic field to focus electron beams in 3d semi-metals.

QMAT goes bowling

Published:17.02.2020
In celebration of new group members, QMAT went bowling.

Welcome to QMAT Hung-wei

Published:25.01.2020
—A new Phd student joins QMAT

Future Directions in Topological States of Matter

Published:18.01.2020
QMAT visits Aspen Center for Physics.

EDMX Research Day 2019

Published:29.11.2019
Congratulations to Jonas Diaz for winning the best poster award at the EDMX Research Day 2019.

A Novel Approach to Non-uniform Superconductivity

Published:11.10.2019
— New Science article published on spatially-controlled superconductivity.

A Micro-structured Swiss Watch

Published:30.09.2019
— Engraving the hands of a Swiss-made watch using Focused Ion Beam microstructuring.

International Conference on Strongly Correlated Electron Systems

Published:30.09.2019
— Congratulations to Dr. Maja Bachmann and Dr. Chunyu Guo for winning poster awards at SCES!

Exploring New Materials By High Pressure Synthesis

Published:19.09.2019
— Persistent antiferromagnetic order in heavily overdoped Ca_1−xLa_xFeAs₂

Welcome Maarten!

Published:17.09.2019
— Dr. Maarten van Delft joins QMAT.

Dr. Maja Bachmann Graduates!

Published:31.07.2019
— Dr. Maja Bachmann, the first student from QMAT, graduates.

European FIB Network Workshop

Published:17.06.2019
— QMAT presented novel techniques in FIB-Fabricated Microstructures at the 2019 European FIB Network Workshop.

QMAT visits Evian-les-Bains

Published:27.05.2019
— In celebration of the PhD students’ successful candidacy exams, QMAT crossed Lac Léman to visit the French town Evian-les-Bains.

Congratulations to Jonas Diaz

Published:27.05.2019
— Congratulations to Jonas Diaz for passing his candidacy exam and successfully completing his first year as a PhD!

Congratulations to Maja Bachmann for passing her viva exam!

Published:23.05.19
— On Monday, Maja successfully completed her viva examination at St. Andrews thereby marking the end of her PhD.

Thermodynamic Signatures of Weyl Fermions in NbP

Published:19.05.19
— Thermodynamic signatures of Weyl fermions are uncovered in NbP with extreme magnetic fields.

Visit from Prof. Boebinger

Published:19.05.19
— Special thanks to Professor Gregory Boebinger, director of the National High Magnetic Field Laboratory, for an informative talk and complementary discussions on quantum matter at extreme magnetic fields.

Gordon Research Seminar: Unconventional Superconductivity

Published:13.05.19
— QMAT would like to thank the organizers and participants of the Gordon Research Seminar on Unconventional Superconductivity for a successful and informative weekend.

Climbing Trip

Published:17.04.19
— When not hard at work, members of QMAT can be found scaling the walls of the local climbing gym!

Congratulations to Xiangwei Huang

Published:05.04.2019
— Congratulations to Xiangwei Huang for passing his candidacy exam and successfully completing his first year as a PhD!

Congratulations to Amelia Estry

Published:04.04.2019
— Congratulations to Amelia Estry for passing her candidacy exam and successfully completing her first year as a PhD!

Welcome to Chunyu Guo

Published:01.04.2019
— ”My name is Chunyu Guo, I did my PhD in China and now joined QMAT as a postdoc. My research interests are focused on strongly correlated systems and topological materials.”