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|Title:||Heating rate and spin flip lifetime due to near-field noise in layered superconducting atom chips|
|Authors:||Fermani, R. |
|Source:||Fermani, R.,Müller, T.,Zhang, B.,Lim, M.J.,Dumke, R. (2010). Heating rate and spin flip lifetime due to near-field noise in layered superconducting atom chips. Journal of Physics B: Atomic, Molecular and Optical Physics 43 (9) : -. ScholarBank@NUS Repository. https://doi.org/9/095002|
|Abstract:||We investigate theoretically the heating rate and spin flip lifetimes due to near-field noise for atoms trapped close to layered superconducting structures with the superconductor in the Meissner state. In particular, we compare the case of a gold layer deposited above a superconductor with the case of a bare superconductor. We study a niobium-based and a YBa2Cu 3O7 - x (YBCO)-based chip. For both niobium and YBCO chips at a temperature of 4.2 K, we find that the deposition of the gold layer can have a significant impact on the heating rate and spin flip lifetime, as a result of the increase of the near-field noise. At a chip temperature of 77 K, this effect is less pronounced for the YBCO chip. © 2010 IOP Publishing Ltd.|
|Source Title:||Journal of Physics B: Atomic, Molecular and Optical Physics|
|Appears in Collections:||Staff Publications|
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