Formation of a Nematic Fluid at High Fields in Sr3Ru2O7

R. Borzi,R. Borzi,S. Grigera,S. Grigera,J. Farrell,R. Perry,S. Lister,Stephen Lee,D. Tennant,Y. Maeno,A. Mackenzie

Published 2006 in Science

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.

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