Formation of a nematic fluid at high fields in Sr3Ru2O7

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 ruthen...

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Published in:Science (American Association for the Advancement of Science) 2007-01, Vol.315 (5809), p.214-217
Main Authors: BORZI, R. A, GRIGERA, S. A, FARRELL, J, PERRY, R. S, LISTER, S. J. S, LEE, S. L, TENNANT, D. A, MAENO, Y, MACKENZIE, A. P
Format: Article
Language:English
Subjects:
Anisotropy
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Conductivity phenomena in semiconductors and insulators
Electronic transport in condensed matter
Electrons
Exact sciences and technology
Fluids
Galvanomagnetic and other magnetotransport effects
Magnetic fields
Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.)
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Physics
Quantum theory
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Summary: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.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.1134796