Table 2.
This work 77 K | Fischer et al. (14) 10 K | Li et al. (16) 10 K |
---|---|---|
0.85 (0.05) | ||
1.55 (0.07) | 1.54 (n.o.) | |
1.62 (0.02) | ||
1.78 (0.03) | 1.75 (0.10) | |
2.09 (0.05) | 2.09 (0.13) | |
2.17 (0.03) | ||
2.30 (0.04) | 2.35 (0.09) | |
2.48 (0.04) | 2.50 (0.06) | 2.43 (n.o.) |
2.76 (0.04) | 2.76 (n.o.) | |
2.82 (0.06) |
Values in parentheses are the FWHM linewidths. Both frequencies and linewidths are given in THz. Frequencies for Fischer et al. (14) and linewidths for both references are estimated from corresponding figure. n.o., linewidths not obtainable.