Charge Order Breaks Magnetic Symmetry in Molecular Quantum Spin Chains

Figure 3

Angular dependence of the ESR linewidth within the 𝑎𝑏̃ plane of (TMTTF)₂AsF₆ and (TMTTF)₂SbF₆ measured at different temperatures above and below the charge-order transition (𝑇_CO=102 and 157 K, resp.) using X-band (blue crosses), Q-band (red stars), and W-band (green dots) spectrometers. The lines represent fits of the linewidth using (1) and (2).

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