Funding
EMP is funded through the Horizon2020 programme of the European Commission.
Selected Publications
 

Uniaxial pressure effects in the two-dimensional van der Waals ferromagnet CrI3

J. Arneth, M. Jonak, S. Spachmann, M. Abdel-Hafiez, Y.O. Kvashnin, R. Klingeler

Magnetoelastic coupling and uniaxial pressure dependencies of the ferromagnetic ordering temperature in the quasi-two-dimensional layered van der Waals material CrI3 are experimentally studied and quantified by high-resolution dilatometry. Clear anomalies in the thermal expansion coefficients at TC imply positive (negative) pressure dependencies TC/pi for pressure applied along (perpendicular to) the c axis. The experimental results are backed up by numerical studies showing that the dominant, intralayer magnetic coupling increases upon compression along the c direction and decreases with negative in-plane strain. In contrast, interlayer exchange is shown to initially increase and subsequently decrease upon the application of both out-of-plane and in-plane compression.


Phys Rev B 105, L060404 (2022)

doi: 10.1103/PhysRevB.105.L060404

arxiv: https://arxiv.org/abs/2202.02220