Formation of a Nematic Fluid at High Fields in Sr3Ru2O7

RODOLFO ALBERTO BORZI; A. GRIGERA, S.; FARRELL, J.; PERRY, R. S.; LISTER, S. J. S.; LEE, S. L.; TENNANT, D. A.; MAENO, Y.; P. MACKENZIE, A.

Science

American Association for the Advancement of Science

Año: 2007 vol. 315 p. 215 - 217

0036-8075

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.