Magnetic Induction of dx2−y2+idxy Order in High- Tc Superconductors
R. B. Laughlin
DOI 10.1103/PhysRevLett.80.5188 · Physical Review Letters
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Abstract
I propose that the phase transition in Bi2Sr2CaCu2O8 recently observed by Krishana et al. [Science 277, 83 (1997)] is the development of a small dxy superconducting order parameter phased by π/2 with respect to the principal dx2−y2 one to produce a minimum energy gap Δ. The violation of both parity and time-reversal symmetry allows the development of a magnetic moment, the key to explaining the experiment. The origin of this moment is a quantized boundary current of IB=2eΔ/h at zero temperature.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8 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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