%0 Journal Article %1 Chatterjee2010 %A Chatterjee, U. %A Shi, M. %A Ai, D. %A Zhao, J. %A Kanigel, A. %A Rosenkranz, S. %A Raffy, H. %A Li, Z. Z. %A Kadowaki, K. %A Hinks, D. G. %A Xu, Z. J. %A Wen, J. S. %A Gu, G. %A Lin, C. T. %A Claus, H. %A Norman, M. R. %A Randeria, M. %A Campuzano, J. C. %D 2010 %I Nature Publishing Group %J Nature Phys. %K imported %N 2 %P 99--103 %T Observation of a $d$-wave nodal liquid in highly underdoped Bi$_2$Sr$_2$CaCu$_2$O$_8+\delta$ %U http://dx.doi.org/10.1038/nphys1456 %V 6 %X A key question in condensed-matter physics is to understand how high-temperature superconductivity emerges on adding mobile charged carriers to an antiferromagnetic Mott insulator. We address this question using angle-resolved photoemission spectroscopy to probe the electronic excitations of the non-superconducting state that exists between the Mott insulator and the d-wave superconductor in Bi2Sr2CaCu2O8+δ. Despite a temperature-dependent resistivity characteristic of an insulator, the excitations in this intermediate state have a highly anisotropic energy gap that vanishes at four points in momentum space. This nodal-liquid state has the same gap structure as that of the d-wave superconductor but no sharp quasiparticle peaks. We observe a smooth evolution of the excitation spectrum, along with the appearance of coherent quasiparticles, as one goes through the insulator-to-superconductor transition as a function of doping. Our results suggest that high-temperature superconductivity emerges when quantum phase coherence is established in a non-superconducting nodal liquid.

@article{Chatterjee2010, abstract = {A key question in condensed-matter physics is to understand how high-temperature superconductivity emerges on adding mobile charged carriers to an antiferromagnetic Mott insulator. We address this question using angle-resolved photoemission spectroscopy to probe the electronic excitations of the non-superconducting state that exists between the Mott insulator and the d-wave superconductor in Bi2Sr2CaCu2O8+δ. Despite a temperature-dependent resistivity characteristic of an insulator, the excitations in this intermediate state have a highly anisotropic energy gap that vanishes at four points in momentum space. This nodal-liquid state has the same gap structure as that of the d-wave superconductor but no sharp quasiparticle peaks. We observe a smooth evolution of the excitation spectrum, along with the appearance of coherent quasiparticles, as one goes through the insulator-to-superconductor transition as a function of doping. Our results suggest that high-temperature superconductivity emerges when quantum phase coherence is established in a non-superconducting nodal liquid.}, added-at = {2010-11-06T00:14:39.000+0100}, author = {Chatterjee, U. and Shi, M. and Ai, D. and Zhao, J. and Kanigel, A. and Rosenkranz, S. and Raffy, H. and Li, Z. Z. and Kadowaki, K. and Hinks, D. G. and Xu, Z. J. and Wen, J. S. and Gu, G. and Lin, C. T. and Claus, H. and Norman, M. R. and Randeria, M. and Campuzano, J. C.}, biburl = {https://www.bibsonomy.org/bibtex/27f52bc5d2d4fc589b4ff0f7886ace185/nplumb}, comment = {10.1038/nphys1456}, file = {:C\:\\Users\\Nick\\Documents\\Papers\\Chatterjee et al. - Observation of a d-wave nodal liquid in highly underdoped Bi2212.pdf:PDF}, interhash = {1fb94b9c74bdbb30c8aaada3d41a401f}, intrahash = {7f52bc5d2d4fc589b4ff0f7886ace185}, issn = {1745-2473}, journal = {Nature Phys.}, keywords = {imported}, month = feb, number = 2, owner = {Nick}, pages = {99--103}, publisher = {Nature Publishing Group}, timestamp = {2010-11-06T00:14:40.000+0100}, title = {Observation of a $d$-wave nodal liquid in highly underdoped Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$}, url = {http://dx.doi.org/10.1038/nphys1456}, volume = 6, year = 2010 }