The pressure effects on magnetic properties of an ideal quasi-2D planar antiferromagnet BaNi2V2O8 at the base and finite temperatures

The pressure attracts noticeable attention in the field of condensed matter physics because it can modify magnetic and electronic properties of the compounds.

The external pressure can induce both structural and magnetic phase transitions giving experimental access to novel magnetic phenomena.

This makes pressure a promising tool to customize the magnetic properties of solid-state compounds both at the base and finite temperatures.

However, no comprehensive study has been done so far on the investigation of the pressure effects on overall magnetic properties such as Hamiltonian, magnetic structure, and critical behavior of a model magnetic system.

I address these issues in the PRESSMAG project which explores “the pressure effects on magnetic properties of an ideal quasi-2D planar antiferromagnet BaNi2V2O8 at the base and finite temperatures”.

First, I will solve the magnetic structure and Hamiltonian of BaNi2V2O8 under applied pressures and then will study the critical behavior of BaNi2V2O8 under applied pressures using both neutron and x-ray scattering techniques.

In particular, the PRESSMAG project will study for the first time the pressure effects on the Berezinskii-Kosterlitz-Thousless phenomena, whose signatures were recently discovered in BaNi2V2O8.

Finally, the small-angle-neutron-scattering technique will be used to image the Berezinskii-Kosterlitz-Thousless vortices in vacuum and under applied pressure.