From quantum matter to high-temperature superconductivity in copper oxides
- B. Keimer, S. Kivelson, M. Norman, S. Uchida, J. Zaanen
- PhysicsNature
- 12 February 2015
The discovery of high-temperature superconductivity in the copper oxides in 1986 triggered a huge amount of innovative scientific inquiry but unresolved issues include the astonishing complexity of the phase diagram, the unprecedented prominence of various forms of collective fluctuations, and the simplicity and insensitivity to material details of the ‘normal’ state at elevated temperatures.
Charge Order Driven by Fermi-Arc Instability in Bi2Sr2−xLaxCuO6+δ
- R. Comin, A. Frano, A. Damascelli
- PhysicsScience
- 4 December 2013
Together with earlier observations of electronic order in other cuprate families, these findings suggest the existence of a generic charge-ordered state in underdoped cuprates and uncover its intimate connection to the pseudogap regime.
Emergent phenomena at oxide interfaces.
- H. Hwang, Y. Iwasa, M. Kawasaki, B. Keimer, N. Nagaosa, Y. Tokura
- Physics, ChemistryNature Materials
- 1 February 2012
Recent technical advances in the atomic-scale synthesis of oxide heterostructures have provided a fertile new ground for creating novel states at their interfaces, with characteristic feature is the reconstruction of the charge, spin and orbital states at interfaces on the nanometre scale.
Long-Range Incommensurate Charge Fluctuations in (Y,Nd)Ba2Cu3O6+x
- G. Ghiringhelli, M. Le Tacon, L. Braicovich
- PhysicsScience
- 4 July 2012
A State of High Tc Superconductivity There are strong indications that high-temperature superconductivity in the cuprates is formed amid competing orders, but only two have been observed…
Strain and composition dependence of orbital polarization in nickel oxide superlattices
- M. Wu, E. Benckiser, B. Keimer
- Physics, Materials Science
- 29 August 2013
A combined analysis of x-ray absorption and resonant reflectivity data was used to obtain the orbital polarization profiles of superlattices composed of four-unit-cell-thick layers of metallic LaNiO3…
Neutron scattering study of the magnetic phase diagram of underdoped YBa2Cu3O6+x
We present a neutron triple-axis and resonant spin-echo spectroscopy study of the spin correlations in untwinned YBa2Cu3O6+x single crystals with x=0.3, 0.35 and 0.45 as a function of temperature and…
Dimensionality Control of Electronic Phase Transitions in Nickel-Oxide Superlattices
The structure of metal-oxide superlattices is used to control the electronic order of the system. The competition between collective quantum phases in materials with strongly correlated electrons…
Neutron scattering from magnetic excitations in Bi2Sr2CaCu2O8+δ
- H. Fong, P. Bourges, B. Keimer
- PhysicsNature
- 18 February 1999
Many of the physical properties of the copper oxide high-temperature superconductors appear to defy the conventional ‘one-electron’ theory of metals. The development of alternative theories…
Nonlinear lattice dynamics as a basis for enhanced superconductivity in YBa2Cu3O6.5
- R. Mankowsky, A. Subedi, A. Cavalleri
- PhysicsNature
- 9 May 2014
The crystal structure of this exotic non-equilibrium state of YBa2Cu3O6+x is reported, determined by femtosecond X-ray diffraction and ab initio density functional theory calculations, and the enhancement in the character of the in-plane electronic structure is likely to favour superconductivity.
Magnetism at the interface between ferromagnetic and superconducting oxides
- J. Chakhalian, J. Freeland, B. Keimer
- Physics
- 1 April 2006
Carefully controlled interfaces between two materials can give rise to novel physical phenomena and functionalities not exhibited by either of the constituent materials alone. Modern synthesis…
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