Li BL, Guo ML, Chen JF, Fang JW, Fan BY, Zhou Q, Wang Y, Song HZ, Niu XB, Arutyunov KY, Guo GC, Deng GW. Very high-frequency, gate-tunable CrPS
4 nanomechanical resonator with single mode.
OPTICS LETTERS 2023;
48:2571-2574. [PMID:
37186711 DOI:
10.1364/ol.489345]
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Abstract
Two-dimensional (2D) antiferromagnetic semiconductor chromium thiophosphate (CrPS4) has gradually become a major candidate material for low-dimensional nanoelectromechanical devices due to its remarkable structural, photoelectric characteristics and potentially magnetic properties. Here, we report the experimental study of a new few-layer CrPS4 nanomechanical resonator demonstrating excellent vibration characteristics through the laser interferometry system, including the uniqueness of resonant mode, the ability to work at the very high frequency, and gate tuning. In addition, we demonstrate that the magnetic phase transition of CrPS4 strips can be effectively detected by temperature-regulated resonant frequencies, which proves the coupling between magnetic phase and mechanical vibration. We believe that our findings will promote the further research and applications of the resonator for 2D magnetic materials in the field of optical/mechanical signal sensing and precision measurement.
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