Figure 4: Temperature dependence of the excitation spectra. | Nature Communications

Figure 4: Temperature dependence of the excitation spectra.

From: Laser spectroscopic probing of coexisting superfluid and insulating states of an atomic Bose–Hubbard system

Figure 4

Contributions to the spectrum from the SF and NF components of different lattice depths and initial temperatures for the calculation. The lattice depths are (a–c) 7Er, (d–f) 10Er and (g–i) 13Er. The initial temperatures Tini for the calculation are (a,d,g) 95 nK, (b,e,h) 110 nK and (c,f,i) 125 nK. The colour scheme is the same as in Fig. 3. The grey circles denote the same data shown in Fig. 2 for comparison.

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