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Mar 20 – 23, 2023
Campus Garching
Europe/Berlin timezone

Uniaxial Control of Quantum Matter

Mar 20, 2023, 11:00 AM
MW 0 001 - Lecture hall (Fakultät für Maschinenwesen)

MW 0 001 - Lecture hall

Fakultät für Maschinenwesen

Talk (25 + 5 min) Magnetism, Superconductivity, Topological Systems, Magnetic Thin Films an other electronic phenomena Neutron Methods


Gediminas Simutis (Paul Scherrer Institute)


Quantum matter is characterised by competing and intertwined orders. Here I will present our recent advances in using uniaxial pressure as a clean “surgical” tool to tune quantum phases while simultaneously obtaining microscopic insights via scattering experiments. In particular, we address two directions - minimizing the background and enabling the tuning in-situ.

First, we study spin order in cuprate superconductors characterized by small moments, which remains challenging for pressure studies. We overcome this challenge by designing a low-background uniaxial strain cell, optimizing the experiment based on neutron-tracing simulations and using aggressive focusing and energy analysis. We show that the spin order parameter in cuprates is uniaxial and coupled to the charge channel [1].

Second, to further improve the feasibility and speed of such experiments, we have designed a new in-situ uniaxial device for large-scale facility research based on an actuator-motor mechanism, efficient feedback loops and the sample-holder design enabling rapid exchange of the samples [2]. I will demonstrate the improved capabilities of this device reporting the control of charge order in cuprates and magnetic phases in skyrmion materials, respectively.

[1] Simutis et al. in review and arXiv:2204.02304 (2022)
[2] Simutis et al. in review and arXiv:2207.13194 (2022)

Primary authors

Gediminas Simutis (Paul Scherrer Institute) Daniel Mazzone (Paul Scherrer Institute) Julia Küspert (University of Zurich) Markus Zolliker (Paul Scherrer Institute) Martin Boehm (Institut Laue-Langevin) Frédéric Bourdarot (CEA) Martin Mansson (KTH) Oleh Ivashko (DESY) Martin von Zimmermann (DESY) Jonathan White (Paul Scherrer Institute) Johan Chang (University of Zurich) Yasmine Sassa (Chalmers University of Technology) Niels Bech Christensen (Technical University of Denmark) Marek Bartkowiak (Paul Scherrer Institut) Marc Janoschek (Paul Scherrer Institut)

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