Paired Electron Pockets in the Hole-Doped Cuprates
| Title: | Paired Electron Pockets in the Hole-Doped Cuprates |
| Author: |
Galitski, Victor; Sachdev, Subir
Note: Order does not necessarily reflect citation order of authors. |
| Citation: | Galitski, Victor, and Subir Sachdev. 2009. Paired electron pockets in the hole-doped cuprates. Physical Review B 79(13): 134512. |
| Full Text & Related Files: |
0901.0005v5.pdf (515.1Kb; PDF) 
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| 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. |
| Published Version: | doi:10.1103/PhysRevB.79.134512 |
| Other Sources: | http://arxiv.org/abs/0901.0005v5 |
| Terms of Use: | This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP |
| Citable link to this page: | http://nrs.harvard.edu/urn-3:HUL.InstRepos:7696990 |
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