Speaker
Katharina Kress
(Department of Physics, University of Basel, Basel, Switzerland)
Description
Understanding magnetism in two-dimensional (2D) van der Waals (vdW) magnets requires nanoscale local probes. Scanning SQUID microscopy (SSM), with ~100 nm resolution, enables direct imaging of magnetic structures in mono- and few-layer materials. Using SSM, we investigate the magnetic behavior of CrPS₄, a weakly anisotropic vdW interlayer antiferromagnet. Monolayer CrPS₄ shows no remanence and a zero coercive field, unlike thicker odd layers that exhibit 20–50 mT coercivity and nearly 100% remanence. Layer-dependent studies reveal that interlayer coupling and dimensionality govern magnetic responses. These findings provide insight into mechanisms driving long-range magnetic order in 2D.
| email address | katharina.kress@unibas.ch |
|---|---|
| Affiliation | University of Basel |
Author
Katharina Kress
(Department of Physics, University of Basel, Basel, Switzerland)
Co-authors
Alberto Morpurgo
(Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland)
Andriani Vervelaki
(Department of Physics, University of Basel, Basel, Switzerland)
Boris Gross
(Department of Physics, University of Basel, Basel, Switzerland)
Daniel Jetter
(Department of Physics, University of Basel, Basel, Switzerland)
Fengrui Yao
(Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland)
Ignacio Gutierrez
(Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland)
Kenji Watanabe
(Research Center for Functional Materials, National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044, Japan)
Martino Poggio
(Swiss Nanoscience Institute, University of Basel, Basel, Switzerland)
Menghan Liao
(Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland)
Paritosh Karnatak
(Department of Physics, University of Basel, Basel, Switzerland)
Takashi Taniguchi
(International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan)
