Electronic liquid crystal state in the high-temperature superconductor YBCO(6.45)
arXiv:0807.1861 · doi:10.1126/science.1152309
Abstract
Electronic phases with symmetry properties matching those of conventional liquid crystals have recently been discovered in transport experiments on semiconductor heterostructures and metal oxides at milli-Kelvin temperatures. We report the spontaneous onset of a onedimensional, incommensurate modulation of the spin system in the high-temperature superconductor YBa2Cu3O6.45 upon cooling below ~150 K, while static magnetic order is absent above 2 K. The evolution of this modulation with temperature and doping parallels that of the in-plane anisotropy of the resistivity, indicating an electronic nematic phase that is stable over a wide temperature range. The results suggest that soft spin fluctuations are a microscopic route towards electronic liquid crystals, and nematic order can coexist with high-temperature superconductivity in underdoped cuprates.
10 pages, 4+2 figures, includes a "materials and methods" as well as a "supporting text" section
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- Theory of the nodal nematic quantum phase transition in superconductors
- Time-Reversal Symmetry Breaking and Spontaneous Anomalous Hall Effect in Fermi Fluids
- Fluctuating Stripes in Strongly Correlated Electron Systems and the Nematic-Smectic Quantum Phase Transition
- Field-induced soft-mode quantum phase transition in LaSrCuO
- First-Order Type Effects in YBaCuO at the Onset of Superconductivity
- Signatures of the nematic ordering transitions in the thermal conductivity of d-wave superconductors
- Intimate relations between electronic nematic, d-density wave and d-wave superconducting states
- Inter-layer Josephson coupling in stripe-ordered superconducting cuprates