Physics – Condensed Matter – Superconductivity
Scientific paper
2009-06-10
Physics
Condensed Matter
Superconductivity
5 pages V. 2: replaced incorrect g value
Scientific paper
The Keldysh's theory of superfluidity of rarefied electron-hole gas is generalized to a case of possible pair polarizability. It was shown that inhomogeneity of the system leads to dipole moment which is proportional to the density gradient. The dipole moment appears also near boundaries of the system. It was determined that quantized vortices in a magnetic field carry a real electric charge. In He II at H=10 T and helium rotation velocity $10^2$ s$^{-1}$ the charge density is about $10^4e$ cm$^{-3}$, where $e$ is the electron charge.
Rukin A. S.
Shevchenko S. I.
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