  The quasi-one-dimensional material PdTeI exhibits unusual electronic
transport properties at ambient pressure. Here, we systematically investigate
both the structural and electronic responses of PdTeI to external pressure,
through a combination of electrical transport, synchrotron x-ray diffraction
(XRD), and Raman spectroscopy measurements. The charge density wave (CDW) order
in PdTeI is fragile and the transition temperature TCDW decreases rapidly with
the application of external pressure. The resistivity hump is indiscernible
when the pressure is increased to 1 GPa. Upon further compression, zero
resistance is established above 20 GPa, suggesting the occurrence of
superconductivity. Combined XRD and Raman data evidence that the emergence of
superconductivity is accompanied by a pressure-induced amorphization of PdTeI.
