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We present experimental evidence of emergent density wave instability insingle crystalline low dimensional wires of Yittrium based Pyrochlore Iridates.We demonstrate electric field induced nonlinear hysteretic switching of thedensity wave at low temperature, followed by smooth nonlinear conduction athigher temperature (T > 40 K) in $Y_{2-x}Bi_{x}Ir_{2}O_{7}$ with x = 0 and 0.3.AC transport measurements reveal the presence of four different collectiverelaxation processes which dominate at different temperature scales. There is astrong coupling of the normal charge carriers with the density wave condensate,which is reflected in the linear scaling of the dc conductivity with thecollective relaxation rate across a wide range of frequency and temperatureregime. The evidence of density wave in low dimensional single crystals ofPyrochlore Iridate could be a precursor to the possible experimentalconfirmation of the Weyl semimetallic ground state with broken chiral symmetry.

Evidence of density waves in single crystalline nanowires of Pyrochlore Iridates