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Superfluid Flow Past an Array of Scatterers
| Content Provider | Semantic Scholar |
|---|---|
| Author | Taras-Semchuk, D. Gunn, J. M. F. |
| Copyright Year | 1998 |
| Abstract | We consider a model of nonlinear superfluid flow past a periodic array of point-like scatterers in one dimension. An application of this model is the determination of the critical current of a Josephson array in a regime appropriate to a Ginzburg-Landau formulation. Here, the array consists of short normal-metal regions, in the presence of a Hartree electron-electron interaction , and embedded within a one-dimensional superconducting wire near its critical temperature, T c. We predict the critical current to depend linearly as A(T c − T), while the coefficient A depends sensitively on the sizes of the superconducting and normal-metal regions and the strength and sign of the Hartree interaction. In the case of an attractive interaction, we find a further feature: the critical current vanishes linearly at some temperature T * less than T c , as well as at T c itself. We rule out a simple explanation for the zero value of the critical current, at this temperature T * , in terms of order parameter fluctuations at low frequencies. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/cond-mat/9812268v1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Ampersand Arabic numeral 0 Coefficient Electron Embedded system Embedding Interaction Nonlinear system Population Parameter |
| Content Type | Text |
| Resource Type | Article |
