High Pressure Workshop

Session

Afternoon Session 1

22 Nov 2023, 13:00

Auditorium (WHGA) (PSI Villigen)

9. THz control of quantum materials under pressure

Elsa Abreu (ETH Zürich)

22/11/2023, 13:15

Talk

Quantum materials exhibit rich phase diagrams, strongly sensitive to external parameters, which include intriguing properties such as magnetic and ferroelectric order, electronic correlations, superconductivity, and spin and charge order. These macroscopic properties arise from the complex interactions between electronic, structural, spin and orbital degrees of freedom. While key in defining...

15. Pressure tuning and Evolution of Structural, Magnetic and Electronic Properties in TMPX3 van-der-Waals Compounds

Shiyu Deng (University of Cambridge)

22/11/2023, 13:30

Talk

Control of dimensionality in condensed matter continues to reveal novel quantum phenomena and effects. Transition metal phosphorous trichalcogenides TM P X 3 (TM = Mn, Fe, Ni, V, etc., X = S, Se) have proven to be ideal examples where structural, magnetic and electronic properties evolve into novel states when their dimensionality is tuned with pressure. At ambient pressure, they are...

5. Giant pressure-enhancement of multiferroicity in CuBr$_2$

Dr Bruce Normand (LTC, SCD, Paul Scherrer Institute)

22/11/2023, 13:45

Talk

Type-II multiferroic materials, in which ferroelectric polarization is induced by inversion-nonsymmetric magnetic order, promise new and highly efficient multifunctional applications based on the mutual control of magnetic and electric properties. Although this phenomenon has to date been limited to low temperatures, we have found a giant pressure-dependence of the multiferroic critical...

13. Mobile interfaces in tubes revealed for three-phase systems containing pressurized methane, p-xylene, and water using neutron imaging

Ondrej Vopicka (Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6, Czechia)

22/11/2023, 14:00

Talk

Interfacial tensions for systems containing model compounds for the freeze out from natural gas can be measured at high pressures by observing the interface shapes in tubes. Mobile interfaces in opaque tubes positioned parallel to gravity are easy to prepare and neutron imaging can provide related system properties (composition, density, etc.). We have observed the phase interfaces in the...

19. Resolving spin reorientation of CrCl3 induced by high-pressure with MuSR and neutron diffraction

Yuqing Ge (Chalmers University of Technology)

22/11/2023, 14:15

Talk

Researches on two-dimensional (2D) materials have attracted tremendous attention both from fundamental and applied sciences since accelerated by the discovery of graphene. Among a large number of 2D materials, chromium trihalides CrX3 (X = Cl, Br, I) van der Waals (vdW) magnets have also raised a large interest due to the existence of many magnetic subtleties that cannot be explained by their...

16. On the study of the phase behavior of salts in water by high-pressure differential scanning calorimetry to prevent clogging in the hydrothermal conversion of wet biomass to biogas and biocrude.

David Baudouin (PSI - Paul Scherrer Institut)

Talk

Hydrothermal liquefaction (HTL) and catalytic hydrothermal gasification (cHTG) have drawn considerable attention in recent years as a clean and renewable biocrude and synthetic natural gas (bio-SNG) production technology, respectively. Under the temperature (350-450°C) and pressure (200-300bars) typically used, water acts as the solvent and reactant, hence no drying step is required to convert...