TY - JOUR
T1 - Thermo-Magnetostrictive Effect for Driving Antiferromagnetic Two-Dimensional Material Resonators
AU - Baglioni, Gabriele
AU - Šiškins, Makars
AU - Houmes, Maurits
AU - Lee, Martin
AU - Shin, Dong Hoon
AU - Mañas-Valero, Samuel
AU - Coronado, Eugenio
AU - Blanter, Yaroslav M.
AU - van der Zant, Herre S.J.
AU - Steeneken, Peter G.
PY - 2023
Y1 - 2023
N2 - Magnetostrictive coupling has recently attracted interest as a sensitive method for studying magnetism in two-dimensional (2D) materials by mechanical means. However, its application in high-frequency magnetic actuators and transducers requires rapid modulation of the magnetic order, which is difficult to achieve with external magnets, especially when dealing with antiferromagnets. Here, we optothermally modulate the magnetization in antiferromagnetic 2D material membranes of metal phosphor trisulfides (MPS3), to induce a large high-frequency magnetostrictive driving force. From the analysis of the temperature-dependent resonance amplitude, we provide evidence that the force is due to a thermo-magnetostrictive effect, which significantly increases near the Neél temperature, due to the strong temperature dependence of the magnetization. By studying its angle dependence, we find the effect is observed to follow anisotropic magnetostriction of the crystal lattice. The results show that the thermo-magnetostrictive effect results in a strongly enhanced thermal expansion force near the critical temperature of magnetostrictive 2D materials, which can enable more efficient actuation of nano-magnetomechanical devices and can also provide a route for studying the high-frequency coupling among magnetic, mechanical, and thermodynamic degrees of freedom down to the 2D limit.
AB - Magnetostrictive coupling has recently attracted interest as a sensitive method for studying magnetism in two-dimensional (2D) materials by mechanical means. However, its application in high-frequency magnetic actuators and transducers requires rapid modulation of the magnetic order, which is difficult to achieve with external magnets, especially when dealing with antiferromagnets. Here, we optothermally modulate the magnetization in antiferromagnetic 2D material membranes of metal phosphor trisulfides (MPS3), to induce a large high-frequency magnetostrictive driving force. From the analysis of the temperature-dependent resonance amplitude, we provide evidence that the force is due to a thermo-magnetostrictive effect, which significantly increases near the Neél temperature, due to the strong temperature dependence of the magnetization. By studying its angle dependence, we find the effect is observed to follow anisotropic magnetostriction of the crystal lattice. The results show that the thermo-magnetostrictive effect results in a strongly enhanced thermal expansion force near the critical temperature of magnetostrictive 2D materials, which can enable more efficient actuation of nano-magnetomechanical devices and can also provide a route for studying the high-frequency coupling among magnetic, mechanical, and thermodynamic degrees of freedom down to the 2D limit.
KW - magnetic materials
KW - nanomechanics
KW - phase transitions
KW - two-dimensional materials
UR - http://www.scopus.com/inward/record.url?scp=85166546178&partnerID=8YFLogxK
U2 - 10.1021/acs.nanolett.3c01610
DO - 10.1021/acs.nanolett.3c01610
M3 - Article
AN - SCOPUS:85166546178
SN - 1530-6984
VL - 23
SP - 6973
EP - 6978
JO - Nano Letters
JF - Nano Letters
IS - 15
ER -