Absence of time reversal symmetry breaking in La_{2-x}Sr_{x}CuO_{4}

Details Absence of time reversal symmetry breaking in La_{2-x}Sr_{x}CuO_{4} Absence of time reversal symmetry breaking in La_{2-x}Sr_{x}CuO_{4}

2008-01-17

arxiv.org/abs/0801.2716v3

Physical Review Letters 101, 017001 (2008).

Physics

Condensed Matter

Superconductivity

Submitted to Phys. Rev. Lett. (2008)

Scientific paper

10.1103/PhysRevLett.101.017001

We have performed zero-field muon spin rotation measurements on single crystals of La_{2-x}Sr_{x}CuO_{4} to search for spontaneous currents in the pseudo-gap state. By comparing measurements on materials across the phase diagram, we put strict upper limits on any possible time-reversal symmetry breaking fields that could be associated with the pseudo-gap. Comparison between experimental limits and proposed circulating current states effectively eliminates the possibility that such states exist in this family of materials.

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