Dual vortex theory of doped Mott insulators
- Department of Physics, University of California, Santa Barbara, CA 93106-4030 (United States)
- Department of Physics, Harvard University, Cambridge, MA 02138 (United States)
We present a general framework for describing the quantum phases obtained by doping paramagnetic Mott insulators on the square lattice. The undoped insulators are efficiently characterized by the projective transformations of various fields under the square lattice space group (the PSG). We show that the PSG also imposes powerful constraints on the doped system, and on the effective action for the vortex and Bogoliubov quasiparticle excitations of superconducting states. This action can also be extended across transitions to supersolid or insulating states at non-zero doping. For the case of a valence bond solid (VBS) insulator, we show that the doped system has the same PSG as that of elementary bosons with density equal to the density of electron Cooper pairs. We also discuss aspects of the action for a d-wave superconductor obtained by doping a 'staggered-flux' spin liquid state.
- OSTI ID:
- 21077657
- Journal Information:
- Annals of Physics (New York), Vol. 322, Issue 11; Other Information: DOI: 10.1016/j.aop.2007.02.001; PII: S0003-4916(07)00027-9; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-4916
- Country of Publication:
- United States
- Language:
- English
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