TY - JOUR
T1 - Nanomechanical probing and strain tuning of the Curie temperature in suspended Cr2Ge2Te6-based heterostructures
AU - Šiškins, Makars
AU - Kurdi, Samer
AU - Lee, Martin
AU - Slotboom, Benjamin J.M.
AU - Xing, Wenyu
AU - Mañas-Valero, Samuel
AU - Coronado, Eugenio
AU - Jia, Shuang
AU - Han, Wei
AU - van der Sar, Toeno
AU - van der Zant, Herre S.J.
AU - Steeneken, Peter G.
PY - 2022
Y1 - 2022
N2 - Two-dimensional magnetic materials with strong magnetostriction are attractive systems for realizing strain-tuning of the magnetization in spintronic and nanomagnetic devices. This requires an understanding of the magneto-mechanical coupling in these materials. In this work, we suspend thin Cr2Ge2Te6 layers and their heterostructures, creating ferromagnetic nanomechanical membrane resonators. We probe their mechanical and magnetic properties as a function of temperature and strain by observing magneto-elastic signatures in the temperature-dependent resonance frequency near the Curie temperature, TC. We compensate for the negative thermal expansion coefficient of Cr2Ge2Te6 by fabricating heterostructures with thin layers of WSe2 and antiferromagnetic FePS3, which have positive thermal expansion coefficients. Thus we demonstrate the possibility of probing multiple magnetic phase transitions in a single heterostructure. Finally, we demonstrate a strain-induced enhancement of TC in a suspended Cr2Ge2Te6-based heterostructure by 2.5 ± 0.6 K by applying a strain of 0.026% via electrostatic force.
AB - Two-dimensional magnetic materials with strong magnetostriction are attractive systems for realizing strain-tuning of the magnetization in spintronic and nanomagnetic devices. This requires an understanding of the magneto-mechanical coupling in these materials. In this work, we suspend thin Cr2Ge2Te6 layers and their heterostructures, creating ferromagnetic nanomechanical membrane resonators. We probe their mechanical and magnetic properties as a function of temperature and strain by observing magneto-elastic signatures in the temperature-dependent resonance frequency near the Curie temperature, TC. We compensate for the negative thermal expansion coefficient of Cr2Ge2Te6 by fabricating heterostructures with thin layers of WSe2 and antiferromagnetic FePS3, which have positive thermal expansion coefficients. Thus we demonstrate the possibility of probing multiple magnetic phase transitions in a single heterostructure. Finally, we demonstrate a strain-induced enhancement of TC in a suspended Cr2Ge2Te6-based heterostructure by 2.5 ± 0.6 K by applying a strain of 0.026% via electrostatic force.
UR - http://www.scopus.com/inward/record.url?scp=85132278847&partnerID=8YFLogxK
U2 - 10.1038/s41699-022-00315-7
DO - 10.1038/s41699-022-00315-7
M3 - Article
AN - SCOPUS:85132278847
SN - 2397-7132
VL - 6
JO - npj 2D Materials and Applications
JF - npj 2D Materials and Applications
IS - 1
M1 - 41
ER -