Chatterjee, Shi, Ai, Zhao, Kanigel, Rosenkranz, Raffy, Li Z, Kadowaki, Hinks D, et al. Observation of a d-wave nodal liquid in highly underdoped Bi 2 Sr 2 CaCu 2 O 8+ $δ$. Nature Physics. 2010;6(2):99. Last updated on 11/26/2020