Neutral fermion, charge- boson excitations in the resonating-valence-bond state and superconductivity in -based compounds
- 1 January 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 37 (1), 627-630
- https://doi.org/10.1103/physrevb.37.627
Abstract
We derive the neutral fermion excitation spectrum in the resonating-valence-bond state based on a fermion-boson field theory. It is formally shown that charge- bosons are created upon doping while the neutral fermion excitation remains gapless, predicting a linear low-temperature specific heat in the superconducting state. Bose condensation in doped samples leads to the observed superconductivity with true "off-diagonal long-range order."
Keywords
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