Fig. 4: Mechanical properties of a 2H-TaS2 resonator with membrane thickness of 31.2 ± 0.6 nm and d = 4 μm.
From: Magnetic and electronic phase transitions probed by nanomechanical resonators
Dashed vertical line in all 4 panels indicates the detected TCDW, that is defined by the peak in \(\frac{{\rm{d}}({f}_{0}^{2}(T))}{{\rm{d}}T}\). a Solid blue line—resonance frequency as a function of temperature. Solid magenta line—temperature derivative of \({f}_{0}^{2}\). b Solid blue line—experimentally derived cv and thermal expansion coefficient as a function of temperature (see Supplementary Note 6). Solid magenta line—specific heat of bulk 2H-TaS2 as reported in Abdel-Hafiez et al.14. Inset: optical image of the sample. Scale bar: 20 μm. c Quality factor Q(T) as a function of temperature. d Solid orange line—measured mechanical damping Q−1(T) as a function of temperature. Solid blue line—curve proportional to the term cv(T) T20,21 (see Supplementary equation (14)), with cv(T) taken from the experimental data in (b).
