Ellipsometry and broken time-reversal symmetry in the high-temperature superconductors

G. S. Canright; A. G. Rojo

doi:10.1103/PhysRevB.46.14078

← Back to search

Ellipsometry and broken time-reversal symmetry in the high-temperature superconductors

G. S. Canright, A. G. Rojo

DOI 10.1103/PhysRevB.46.14078 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

We discuss ellipsometric experiments seeking evidence of broken time-reversal symmetry in the high-temperature copper oxide superconductors. We use both a generalized symmetry analysis, and a magnetoelectric model suggested by Dzyaloshinskii, to argue that the hypothesis that best fits the various experimental results is the scrPscrT-invariance hypothesis—which assumes broken scrT symmetry in each plane, and antiferromagnetic (alternating) order of the broken symmetry in the c direction. We suggest two experimental tests of the scrPscrT-invariant model; one of these is sufficient to rule out any other broken-symmetry state and so has the potential to be extremely useful.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown