Optimal thickness of rectangular superconducting microtraps for cold atomic gases

A. Markowsky, A. Zare, V. Graber, T. Dahm

Research output: Contribution to journalArticlepeer-review

Abstract

We study superconducting microtraps with rectangular shapes for cold atomic gases. We present a general argument why microtraps open, if brought close to the surface of the superconductor. We show that for a given width of the strips there exists an optimal thickness under which the closest distance of the microtrap from the superconductor can be achieved. The distance can be significantly improved, if the edge enhancement of the supercurrent near edges and corners is exploited. We compare numerical calculations with results from conformal mapping and show that conformal mapping can often give useful approximate results.
Original languageEnglish
JournalPhys. Rev. A
DOIs
Publication statusPublished - 10 Aug 2012

Keywords

  • physics.atom-ph
  • cond-mat.supr-con

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