nEXO: the next generation neutrinoless double beta decay search

The nEXO experiment will search for neutrinoless double beta decay (0$\nu\beta\beta$), a rare nuclear process that only occurs if neutrinos are Majorana particles, using 5 tonnes of isotopically enriched liquid $^{136}$Xe. nEXO will expand upon the experience of the successful EXO-200 experiment, including a scaled up version of an ultra-low background single-phase time projection chamber with scintillation and ionization readouts. Current projected half-life sensitivity of nEXO is $>$ 5$\times$10$^{27}$ years with 5 years of data, which probes the inverted neutrino mass hierarchy. The current R\&D progress and the physics potential of nEXO will be discussed in this talk.