Observation of a d-wave nodal liquid in highly underdoped Bi 2Sr 2CaCu 2O {8 δ} - Condensed Matter > SuperconductivityReport as inadecuate




Observation of a d-wave nodal liquid in highly underdoped Bi 2Sr 2CaCu 2O {8 δ} - Condensed Matter > Superconductivity - Download this document for free, or read online. Document in PDF available to download.

Abstract: We use angle resolved photoemission spectroscopy to probe the electronicexcitations of the non-superconducting state that exists between theantiferromagnetic Mott insulator at zero doping and the superconducting stateat larger dopings in Bi 2Sr 2CaCu 2O {8+\delta}. We find that this state is anodal liquid whose excitation gap becomes zero only at points in momentumspace. Despite exhibiting a resistivity characteristic of an insulator and theabsence of coherent quasiparticle peaks, this material has the same gapstructure as the d-wave superconductor. We observe a smooth evolution of thespectrum across the insulator-to-superconductor transition, which suggests thathigh temperature superconductivity emerges when quantum phase coherence isestablished in a non-superconducting nodal liquid.



Author: U. Chatterjee, M. Shi, D. Ai, J. Zhao, A. Kanigel, S. Rosenkranz, H. Raffy, Z. Z. Li, K. Kadowaki, D. G. Hinks, Z. J. Xu, J. S. W

Source: https://arxiv.org/







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