High Pressure Workshop

Session

High Pressure and Quantum Materials 1

11 May 2026, 10:00

Auditorium (WHGA) (PSI Villigen)

63. Pressure-induced ordering in the model quantum magnet DTN

Kirill Povarov (Helmholtz-Zentrum Dresden-Rossendorf, Dresden High Magnetic Field Laboratory)

11/05/2026, 10:00

Talk

We experimentally demonstrate pressure-induced ordering in the model S = 1 quantum paramagnet NiCl₂·4SC(NH₂)₂ (DTN) [1,2]. Employing TDO susceptibility and ultrasound techniques at high magnetic fields and low temperatures, we show that the spin gap vanishes and the magnetic order appears at a critical pressure P_c = 4.2(3) kbar [3]. Powder neutron...

47. Frustrated pyrochlore lattice in FeV$_{2}$O$_{4}$ under uniaxial pressure

Jana Pásztorová (Forschungszentrum Jülich, JCNS)

11/05/2026, 10:30

Talk

Multiferroics have been at the forefront of condensed-matter research for several decades due to their importance for fundamental understanding of the coupling between magnetic and electric properties, as well as their potential for the development of energy-efficient data storage technologies [1,2]. Magnetic spinels such as iron vanadate, FeV$_{2}$O$_{4}$, in which V ions occupy a...

48. Two Plaquette-Singlet Phases and Emergent SO(5) Deconfined Quantum Criticality in SrCu$_2$(BO$_3$)$_2$

Bruce Normand

11/05/2026, 10:50

Talk

The deconfined quantum critical point (DQCP) has become a central open concept in the physics of quantum matter. The theoretical proposal of a DQCP at the plaquette-singlet--to--antiferromagnet (PS--AFM) transition in the Shastry-Sutherland model was followed by experimental evidence for a minimal DQCP scenario induced by an applied magnetic field in SrCu$_2$(BO$_3$)$_2$. However, the nature...

74. Lifting the Degeneracy of the Quantum Spin Liquid Phase by Uniaxial Pressure in PbCuTe₂O₆

Shams Sohel Islam (PSI Center for Neutron and Muon Sciences CNM, 5232 Villigen PSI, Switzerland)

11/05/2026, 11:10

Talk

PbCuTe₂O₆ is a candidate quantum spin liquid (QSL) that shows no static magnetic order down to the lowest temperatures, along with signatures of fractionalized excitations [1, 2]. Recent thermodynamic measurements reveal a ferroelectric transition near 1 K, accompanied by anisotropic lattice distortions [3]. The enhanced response along the [110] direction and the divergent behavior of the...