Issues
Physics Update
Dramatic Evidence Seen for Collective Behavior among Electrons in Closely Separated Layers
Theorists describe the two-layer system as a Josephson junction, an exciton condensate, or a ferromagnet.
Novel B Factories Close In on the Violation of CP Symmetry
How well does CP violation obey standard particle theory? Electron-positron colliders of a new kind were built in the US and Japan to find out.
Letters
Search and Discovery
Helium joins family of gaseous bose-einstein condensates
Now that researchers have observed the condensation of a gas of helium in its metastable state, helium is the first atom to form a Bose condensate in two phases.
Issues and Events
Europe Moves toward Coherent Higher Education, Competes for Students
In the debates on how to reform Europe’s higher education systems, the aims are faster, internationally recognized degrees that will be accepted by employers, increased flexibility of study programs, and global competitiveness.
Dropout Rate among Chinese Physics PhD Students Seems High; Community Considers Why
US physics departments are starting to take measures to select students who are more dedicated to staying in physics.
DESY Unveils Plan for the TESLA Collider
The superconducting 500-GeV e+e− linear collider would run under town and country for 33 kilometers.
Articles
Layered Magnetic Structures: History, Highlights, Applications
Once studied primarily for their effects on light, thin magnetic films are today being layered to make complex structures with unique magnetic properties. Devices based on these structures are revolutionizing electronic data storage.
Half Metallic Magnets
Not to be confused with semiconductors, half metals belong to a new class of materials that look set to play a key role in next-generation electronic devices.
Epitaxially Self-Assembled Quantum Dots
Nanometer-scale islands that form spontaneously on a semiconductor substrate have atomlike properties and potential applications in optical and optoelectronic devices, quantum computing, and information storage.