Articles in 2006

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  • Depending on the temperature, the flow of current between two reservoirs of superfluid 4He exhibits phase slippage — a mechanism that creates vortices and leads to energy dissipation — or Josephson oscillations when the apertures connecting the reservoirs behave as a weak link.

    • Demetris Charalambous
    News & Views
  • The role of phonons in conventional superconductivity — first determined by isotope substitution — has been known for over half a century. But identifying the mechanism in unconventional superconductivity is a much more challenging affair.

    • Michael Norman
    News & Views
  • The observation of macroscopic quantum coherent behaviour by a single polymer chain provides an important model system for studying the physics of reduced dimensionality, unperturbed by the disorder that can complicate the study of conventional inorganic systems.

    • Heinz Bässler
    News & Views
  • The melting temperatures of the base-pair sequences in DNA are difficult to predict. But applying statistical physics to the problem has created an 'index' that well represents the molecule's thermal properties.

    • Michel Peyrard
    News & Views
  • The ability to measure small or slow rotations relative to an inertial frame is valuable in navigation as well as in fundamental physics. A device that exploits techniques developed in atomic physics could lead to sensitive and compact rotation sensors.

    • Richard Stoner
    • Ronald Walsworth
    News & Views