Figure 2 | Scientific Reports

Figure 2

From: Metal-to-insulator crossover in alkali doped zeolite

Figure 2

(a) 23Na NMR spectra at 270 K as a function of loading level n, varying between 11.3 and 16.5. (b) Temperature dependence of 23Na spectra for metallic n = 16.5 and insulating n = 11.6 samples. All spectra were measured with short (solid black line) and long pulses (thick color line). See text for more details.

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