Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session OD01: V: On-Demand Presentations - Available throughout March Meeting
6:00 AM,
Sunday, March 3, 2024
Abstract: OD01.00056 : Spin reorientation of the van der Waals magnet CrCl3 induced by high-pressure: MuSR and neutron diffraction study.*
Presenter:
Yuqing Ge
(KTH Royal Institute of Technology)
Authors:
Yuqing Ge
(KTH Royal Institute of Technology)
Pascal Manuel
(ISIS Neutron & Muon Facility, STFC Rutherford Appleton Lab)
Konstantinos Papadopoulos
(Chalmers University of Technology)
Frank Elson
(KTH)
Elisabetta Nocerino
(Stockholm University)
Gaia Berardino
(KTH)
Rustem Khasanov
(PSI)
Fabio Orlandi
(ISIS Neutron & Muon Facility, STFC Rutherford Appleton Lab)
Dmitry Khalyavin
(ISIS Neutron & Muon Facility, STFC Rutherford Appleton Lab)
Jun Sugiyama
(Neutron Science and Technology Center, Comprehensive Research, Organization for Science and Society (CROSS), Advanced Science Research Center, Japan Atomic Energy Agency)
Mahmoud Abdel-Hafiez
(Department of Physics and Astronomy, Uppsala University)
Ola Forslund
(Physik-Institut, Universität Zürich)
Martin Mansson
(KTH)
Yasmine Sassa
(Chalmers University of Technology)
Numerous studies were performed on CrI3, but only a few have been reported so far on its analogue CrCl3. The 2D vdW CrCl3 compound is stabilized under a rhombohedral symmetry, consisting of 2D Cr layers arranged in a honeycomb web fashion and surrounded by octahedrally coordinated Cl, with weak vdW inter-layer coupling. This makes CrCl3 an ideal system to study under external stimuli such as pressure or magnetic field, where new intriguing states of matter can be unveiled. Expectantly, studies of CrCl3 under high pressure and room temperature have been reported. [1] However, its spin dynamics at low-temperature and high-pressure regimes remain unexplored. Motivated by the variability of the spin degree of freedom and spin dynamics under such conditions, we have performed muon spin rotation (mSR) and neutron powder diffraction (NPD) on ambient and hydrostatically pressured CrCl3 up to 23 kbar down to 2 K. [2,3]
In this study, by incorporating the two techniques, we resolved a suppression of the magnetic ground state and a stronger relaxation rate by MuSR. Within the magnetically ordered states, a spin reorientation was also observed by NPD at high pressure. This further extends the investigation into the interplay between the inter-, and intra-layer coupling in the vdW magnet family. A linear extrapolation points toward the suppression of magnetism at about pc= 30 kbar indicating the possible existence of a critical point at pc. [3]
[1] Ahmad, A., et al. Nanoscale 12.45 (2020): 22935-22944.
[2] Forslund, O., et al. arXiv:2111.06246 (2021).
[3] Ge, Y., et al., in preparation.
*Y.G. is supported by the Swedish Foundation for Strategic Research (SSF) within the Swedish national graduate school in neutron scattering (SwedNess).
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