Paired Electron Pockets in the Hole-Doped Cuprates

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Paired Electron Pockets in the Hole-Doped Cuprates

Show simple item record Galitski, Victor Sachdev, Subir 2012-01-18T15:56:09Z 2009
dc.identifier.citation Galitski, Victor, and Subir Sachdev. 2009. Paired electron pockets in the hole-doped cuprates. Physical Review B 79(13): 134512. en_US
dc.identifier.issn 1098-0121 en_US
dc.description.abstract We propose a theory for the underdoped hole-doped cuprates, focusing on the "nodal-anti-nodal dichotomy" observed in recent experiments. Our theory begins with an ordered antiferromagnetic Fermi liquid with electron and hole pockets. We argue that it is useful to consider a quantum transition at which the loss of antiferromagnetic order leads to a hypothetical metallic "algebraic charge liquid" (ACL) with pockets of charge -e and +e fermions, and an emergent U(1) gauge field; the instabilities of the ACL lead to the low temperature phases of the underdoped cuprates. The pairing instability leads to a superconductor with the strongest pairing within the -e Fermi pockets, a d-wave pairing signature for electrons, and very weak nodal-point pairing of the +e fermions near the Brillouin zone diagonals. The influence of an applied magnetic field is discussed using a proposed phase diagram as a function of field strength and doping. We describe the influence of gauge field and pairing fluctuations on the quantum Shubnikov-de Haas oscillations in the normal states induced by the field. For the finite temperature pseudogap region, our theory has some similarities to the phenomenological two-fluid model of -2e bosons and +e fermions proposed by Geshkenbein, Ioffe, and Larkin [Phys. Rev. B 55, 3173 (1997)], which describes anomalous aspects of transverse transport in a magnetic field. en_US
dc.description.sponsorship Physics en_US
dc.language.iso en_US en_US
dc.publisher American Physical Society en_US
dc.relation.isversionof doi:10.1103/PhysRevB.79.134512 en_US
dc.relation.hasversion en_US
dash.license OAP
dc.subject strongly correlated electrons en_US
dc.title Paired Electron Pockets in the Hole-Doped Cuprates en_US
dc.type Journal Article en_US
dc.description.version Author's Original en_US
dc.relation.journal Physical Review B en_US Sachdev, Subir 2012-01-18T15:56:09Z

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