Detecting Electronic Nematicity by the Angle-Resolved Transverse Resistivity Measurements
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The observation of nonzero voltage transverse to the current flow, in zero magnetic field, is a sensitive indication of the nematic order in cuprate superconductors. But this effect should be carefully identified and differentiated from various conceivable experimental artifacts. Here we discuss in detail the five types of artifacts commonly encountered in transport experiments and explain how we rule out these possibilities by decisive experimental evidence.
KeywordsHigh-temperature superconductivity Electronic nematicity Spontaneous symmetry breaking Transverse voltage Cuprate
The experimental work was done at the Brookhaven National Laboratory and was supported by the US Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division. X. H. was supported by the Gordon and Betty Moore Foundation’s EPiQS Initiative through Grant GBMF4410.