Figure 4
From: Spin glass behavior and magnetic boson peak in a structural glass of a magnetic ionic liquid
Energy, momentum and temperature dependence of magnetic excitation of glassy C4mimFeCl4. (a) Energy spectra corrected for the Bose factor, χ′′(Q,ω), in the glassy state in the temperature range of 0.3–10 K. Red solid curve represents the result of fit with the Debye relaxation model (see main text). (b) Energy spectra below T ≈ TSG obtained using two spectrometers with different energy resolutions (∆E). (c) Energy spectra at T = 0.3 K with different Q, where scale factors are multiplied for comparison. (d) Constant-ℏω cuts at 0.1 ± 0.04 meV (excitation peak) and 0 ± 0.015 meV (elastic scattering) for the 0.3 K data, where the magnetic elastic scattering was obtained by subtracting the data at 10 K.
