Coherence and single-particle excitations in the high-temperature superconductors
Article Abstract:
Fluctuations of the superconducting order parameter are predicted to be large in the high-Tc copper oxides, due to short coherence length or large penetration depth. There are several explanations for the formation of the pseudogap in the underdoped regime. The nature of the condensation is directly tested by comparing two types of determination of the gap, sensitive to Deltap and Deltac. The continuous increase of Deltap in the underdoped regime may be explained by both local pairs and the stripe model. Deltap may also be unrelated to a pairing amplitude, but the existence of two energy scales is well established in the underdoped regime.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
Limits on differential rotation of the inner core from an analysis of the Earth's free oscillations
Article Abstract:
A method to analyse free oscillations insensitive to earthquake source, location and mechanism, has been used to constrain the differential rotation. Inner-core differential rotation was found to be essentially zero during the past 20 years, indicating that the inner core is likely to be gravitational locked to the Earth's mantle.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Single optical photon detection with a superconducting tunnel junction. Demonstration of controlled-NOT quantum gates on a pair of superconducting quantum bits
- Abstracts: Imperfect fluids and inheritance. Spin domains in ground-state Bose-Einstein condensates. Mixing fluids and solids
- Abstracts: Unexpected stellar velocity distribution in the warped Galactic disk
- Abstracts: Failure of plume theory to explain midplate volcanism in the southern Austral islands. Two-way exchange between the Easter mantle plume and the Easter microplate spreading axis
- Abstracts: Consistency of female choice in the tungara frog: a permissive preference for complex characters. Interventions and alliance formation between female Japanese macaques, Macaca fuscata, during homosexual consortships