Electromagnetic response and approximate SO(5) symmetry in high-Tc superconductors
C. P. Burgess, J. M. Cline, C. A. Lütken
DOI 10.1103/PhysRevB.58.R14749 · Physical Review B
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Abstract
It has been proposed that the effective Hamiltonian describing high Tc superconductivity in cuprate materials has an approximate SO(5) symmetry relating the superconducting (SC) and antiferromagnetic (AF) phases of these systems. We show that robust consequences of this proposal are potentially large optical conductivities and Raman scattering rates in the AF phase, due to the electromagnetic response of the doubly charged pseudo Goldstone bosons which must exist there. This provides potentially strong constraints on the properties of the bosons, such as their mass gap and velocity, at any given value of the doping.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2CuO2Cl2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Gd2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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