Bose-Einstein condensation of exciton polaritons

Article Abstract:

A comprehensive set of experiments giving compelling evidence for Bose-Einstein condensation (BEC) of polaritons are presented. Observations of a massive occupation of the ground state developing from a polar ton gas at thermal equilibrium at 19K, an increase of temporal coherence, and the build-up of long-range spatial coherence and linear polarization above a critical density are reported, which collectively indicate the spontaneous onset of a macroscopic quantum phase.

United Kingdom, Analysis, Bose-Einstein condensation, Exciton theory, Excitons, Polaritons

---

Large magnetoresistance in non-magnetic silver chalcogenides

Article Abstract:

Research shows that silver chalcogenide materials exhibit dramatically different magnetoresistive properties after being modified stoichiometrically. The silver chalcogenides Ag2S, Ag2Se and Ag2Te become superionic conductors in temperatures of over approximately 400 degrees kelvin but exhibit non-magnetic semiconductor properties at lower temperatures. Varying magnetoresistance properties against temperature are illustrated.

Magnetic materials

---

Non-saturating magnetoresistance in heavily disordered semiconductors

Article Abstract:

A simple model of a macroscopically disordered and strongly inhomogeneous semiconductor that exhibits a similar non-saturating magnetoresistance is presented. The model suggests potential routes for the construction of magnetic field sensors with a large controllable and linear response.

Semiconductors, Semiconductors (Materials), Magnetoresistance

Similar abstracts:

• Abstracts: Reorganization of deep ocean circulation accompanying a Late Cretaceous extinction event. Increased thermohaline stratification as a possible cause for an ocean anoxic event in the Cretaceous period
• Abstracts: Limited heterogeneity of rearranged T-cell receptor V alpha transcripts in brains of multiple sclerosis patients
• Abstracts: Nest spacing in relation to settlement time in colonial cliff swallows. Signals for parent-offspring recognition: a comparative analysis of the begging calls of cliff swallows and barn swallows
• Abstracts: Indirect Effects of Biological Control on Plant Diversity Vary across Sites in Montana Grasslands
• Abstracts: A critical window for cooperation and competition among developing retinotectal synapses. Clocking the birth of neurons

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.