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Abstract:
In principle, a complex assembly of strongly interacting electrons can
self-organize into a wide variety of collective states, but relatively
few such states have been identified in practice. We report that, in the
close vicinity of a metamagnetic quantum critical point, high-purity
strontium ruthenate Sr3Ru2O7 possesses a large magnetoresistive
anisotropy, consistent with the existence of an electronic nematic
fluid. We discuss a striking phenomenological similarity between our
observations and those made in high-purity two-dimensional electron
fluids in gallium arsenide devices.
