Quasiparticle tunneling at an odd-denominator fractional quantum Hall state

In the fractional quantum Hall (FQH) state, the effective charge and interaction parameter of quasiparticles can be extracted through weak tunneling theory [1]. Weak tunneling theory has been applied in the even-denominator 5/2 FQH state's edge-current-tunneling to search for the non-Abelian statistics [2,3,4,5], but weak tunneling theory has not been quantitatively verified in the simpler odd-denominator Laughlin FQH state with similar configurations. We measured edge-current-tunneling within a quantum point contact at the 5/3 FQH state, and the interaction parameter is close to the theoretical prediction 1/3. [1] Phys. Rev. B \textbf{44}, 5708 (1991). [2] Science \textbf{320}, 899 (2008). [3] Phys. Rev. B \textbf{85}, 165321 (2012). [4] Phys. Rev. B \textbf{90}, 075403 (2014). [5] PNAS \textbf{113}, 12386 (2016).