v=_GNPvYdvZAQ) density wave
theory , in which the movement of the spiral arms is seen as different from the movement of actual matter (stars, gas, dust and planets) in them.
It could be an immense density wave
moving through the galaxy.
Recent breakthroughs in high-temperature superconductivity have revealed a complex competition between the superconductive state and charge density wave
Using ultrafast spectroscopy, Mahmood and co-authors of a 2013 Nature Materials paper were able to show that for extremely short periods of time " up to about 2 picoseconds " electrons clustered in a density wave
that could be measured by its amplitude and phase.
Define the incident and reflection current density wave
There are new chapters on topics such as Dirac electrons, super symmetry, charge density wave
states in higher Landau levels, and unconventional QH effects in graphene.
When millions of ring particles in the same region become perturbed in this way, they generate a spiral density wave
that propagates away from the disturbance.
c] = 42 K, the highest of any 2-1-4 system, while long range spin density wave
magnetic order of the Cu moments is also observed in this material.
This work now centres on analyzing the microscopic changes taking place within a superconductor when it hits that key temperature where mobile electrons organize into a wave-like periodic structure called a charge density wave
Furthermore, the microscopic mechanism of charge density wave
capture at singular pinning sites will be addressed.
On the basis of their observations and modeling according to spiral density wave
theory, the team suspects that dynamic processes, possibly resulting from planets in the disk, may be responsible for its spiral shape.
Specific topics include the mutual attractive interaction between polarons giving rise to non- symmetry-breaking metal-insulator transitions, symmetry-breaking metal-charge density wave
insulator transitions, bipolaronic superconductivity and resonant pairing, electron-density-driven polarization catastrophes, Wigner crystallization in systems with long-range Coulomb interaction, and the influence of strong correlations as well as orbital degeneracy on the effectiveness of the electron-phonon interaction.