(a) Raman spectra of ZrTe₅ nanoribbons. Four peaks at 115 cm⁻¹, 119 cm⁻¹, 145 cm⁻¹, and 179 cm⁻¹ are well resolved in the 20 μm wide ribbon, while the signal is weaker in the 0.5 μm wide ribbon. (b) Temperature dependence of resistivity for a 10 μm × 400 nm × 90 nm ZrTe₅ nanoribbon. A broad maximum appears at T_P = 141 K.