Cuprates as doped U(1) spin liquids

Details Cuprates as doped U(1) spin liquids Cuprates as doped U(1) spin liquids

2004-06-02

arxiv.org/abs/cond-mat/0406066v1

Phys. Rev. B 71, 174515 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

11 pages, 7 figures

Scientific paper

10.1103/PhysRevB.71.174515

We explore theoretically the notion that the underdoped cuprates may be viewed as doped U(1) spin liquid Mott insulators. We pursue a conceptually clear version of this idea that naturally incorporates several aspects of the phenomenology of the cuprates. We argue that the low doping region may be fruitfully discussed in terms of the universal physics associated with a chemical potential tuned Mott transition between a U(1) spin liquid insulator and a d-wave superconductor. A precise characterization of the deconfinement in the U(1) spin liquid is provided by the emergence of a conserved gauge flux. This extra conservation law should hold at least approximately in the underdoped materials. Experiments that could possibly detect this conserved gauge flux are proposed.

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