On Measuring Condensate Fraction in Superconductors

Abstract

An analysis of off-diagonal long-range order in superconductors shows that the spin-spin correlation function is significantly influenced by the order if the order parameter is anisotropic on a microscopic scale. Thus, magnetic neutron scattering can provide a direct measurement of the condensate fraction of a superconductor. It is also argued that recent measurements in high temperature superconductors come very close to achieving this goal.

4 pages, 1 eps figure, RevTex. A new possibility in the underdoped regime is added. Other corrections are minor

Cited by in corpus (29)

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• SO(5) Theory of Antiferromagnetism and Superconductivity
• The connection between superconducting phase correlations and spin excitations in YBa${}_2$Cu${}_3$O${}_{6.6}$: A magnetic field study
• Resonant Spin Excitation in an Overdoped High Temperature Superconductor
• Evidence of Doping-Dependent Pairing Symmetry in Cuprate Superconductors
• Dimensional Crossover in Quasi One-Dimensional and High T_c Superconductors
• What the resonance peak cannot do
• Specific-Heat Measurement of Residual Superconductivity in the Normal State of Underdoped Cuprate Superconductors
• Broken time-reversal symmetry in strongly correlated ladder structures
• Electronic specific heat and low energy quasiparticle excitations in superconducting state of $L{a}_{2-x}S{r}_{x}Cu{O}_4$ single crystals
• Magnetic Excitations and their energy change available to Superconducting Condensation in Optimally Doped YBa${}_2$Cu${}_3$O${}_{6.95}$
• Theory of d-density wave viewed from a vertex model and its implications
• Neutron Scattering Signature of d-density Wave Order in the Cuprates
• Sharp signature of DDW quantum critical point in the Hall coefficient of the cuprates
• Spin and Current Correlation Functions in the \bf d-density Wave State of the Cuprates
• Pseudogap, Superconducting Energy Scale, and Fermi Arcs in Underdoped Cuprate Superconductors
• The effects of magnetic field on the d-density wave order in the cuprates
• X-Ray-Diffraction Study of Charge-Density-Waves and Oxygen-Ordering in YBa2Cu3O6+x Superconductor
• Quantum spin correlations through the superconducting-normal phase transition in electron-doped superconducting Pr0.88LaCe0.12CuO4-d
• Search for the existence of circulating currents in high-$T_c$ superconductors using the polarized neutron scattering technique
• Specific heat anomaly in the d-density wave state and emergence of incommensurate orbital antiferromagnetic order
• A critical examination of the spin dynamics in high-$T_C$ cuprates
• Superconducting order parameter in heavily overdoped $B{i}_{2}S{r}_{2}CaC{u}_2{O}_{8+\delta }$: a global quantitative analysis
• Infrared Hall angle in the $d$-density wave state: a comparison of theory and experiment
• "Quasiparticle Charge" in Superconductors: Effect of Mott Physics or Hidden Order Parameter ?
• Linear response theory around a localized impurity in the pseudogap regime of an anisotropic superconductor: precursor pairing vs the d-density-wave scenario
• Collective modes in the d-density wave state of the cuprates
• Orbital Magnetism in the Cuprates