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Vortex structure in underdoped cuprates

Vortex structure in underdoped cuprates In underdoped cuprates the normal state is highly anomalous and is characterized as a pseudogap phase. The question of how to describe the “normal” core of a superconducting vortex is an outstanding open problem. We show that the SU(2) formulation of the t - J model provides a description of the normal state as well as the vortex core. Interestingly, the pseudogap persists inside the core. We also found that it is likely that the core consists of a state that breaks translational symmetry due to the existence of a staggered current that generates a staggered magnetic field with very slow dynamics. This staggered-flux state is likely to be the ground state for magnetic fields higher than H c 2 . Experiments to test this picture are proposed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Vortex structure in underdoped cuprates

Lee, Patrick A; Wen, Xiao-Gang A
Physical Review B , Volume 63 (22) – Jun 1, 2001
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Publisher
American Physical Society (APS)
Copyright
Copyright © 2001 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.63.224517
Publisher site
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Abstract

In underdoped cuprates the normal state is highly anomalous and is characterized as a pseudogap phase. The question of how to describe the “normal” core of a superconducting vortex is an outstanding open problem. We show that the SU(2) formulation of the t - J model provides a description of the normal state as well as the vortex core. Interestingly, the pseudogap persists inside the core. We also found that it is likely that the core consists of a state that breaks translational symmetry due to the existence of a staggered current that generates a staggered magnetic field with very slow dynamics. This staggered-flux state is likely to be the ground state for magnetic fields higher than H c 2 . Experiments to test this picture are proposed.

Journal

Physical Review B – American Physical Society (APS)

Published: Jun 1, 2001

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