High Pressure Workshop

Session

Morning Session

22 Nov 2023, 10:00

Auditorium (WHGA) (PSI Villigen)

3. Squeezing charge stripe order unidirectionally

Johan Chang

22/11/2023, 10:00

Talk

This talk will present resonant and non-resonant x-ray diffraction experiments upon uniaxial pressure application to cuprate superconductors. Special attention is given to the symmetry properties of charge stripe ordering.

4. Probing material properties with neutrons under pressure

Ellen Fogh (EPFL - EPF Lausanne)

22/11/2023, 10:30

Talk

Quantum magnets are physical realisations of many-body quantum systems which may host interesting phenomena such as entangled states or spin-nematic states and quantum phase transitions. There exists a number of experimental knobs for controlling the state of such system: Temperature, magnetic field, chemical doping and pressure. Of all these, the latter is the cleanest way of manipulating...

22. Revealing the KDP soft-mode coupling mechanism with infrared spectroscopy under pressure

Ana Akrap (University of Fribourg)

22/11/2023, 11:00

Talk

Potassium dihydrogen phosphate, KH$_2$PO$_4$ (KDP), is a classic, broadly used ferroelectric material. It is a model system of an order-disorder material, with a Curie temperature $T_C$ of 123 K. Above this temperature, it is a tetragonal paraelectric. Below, it becomes orthorhombic. In the 1940s, Slater wrote an order-disorder theory to describe rather well the physics of KDP [1]. However,...

23. Tuning and understanding correlated quantum phases of layered materials

Zurab Guguchia (PSI - Paul Scherrer Institut)

22/11/2023, 11:30

Talk

The classification and deep understanding of phases of quantum matter is a necessary premise for utilizing quantum materials in all areas of modern and future electronics in a controlled and optimal way. In this respect, layered systems with highly anisotropic electronic properties have been found to be potential hosts for rich, unconventional and tunable exotic quantum states. Prominent...